Parasite (Parasitology Trilogy Series #1)

Parasite (Parasitology Trilogy Series #1)

by Mira Grant


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A decade in the future, humanity thrives in the absence of sickness and disease.

We owe our good health to a humble parasite — a genetically engineered tapeworm developed by the pioneering SymboGen Corporation. When implanted, the Intestinal Bodyguard worm protects us from illness, boosts our immune system — even secretes designer drugs. It's been successful beyond the scientists' wildest dreams. Now, years on, almost every human being has a SymboGen tapeworm living within them.

But these parasites are getting restless. They want their own lives . . . and will do anything to get them.


For more from Mira Grant, check out:


Newsflesh Short Fiction (e-only novellas)
Apocalypse Scenario #683: The Box
San Diego 2014: The Last Stand of the California Browncoats
How Green This Land, How Blue This Sea
The Day the Dead Came to Show and Tell
Please Do Not Taunt the Octopus

Product Details

ISBN-13: 9780594656487
Publisher: Orbit
Publication date: 10/07/2014
Series: Parasitology Trilogy Series , #1
Pages: 544
Product dimensions: 8.20(w) x 5.40(h) x 1.50(d)

About the Author

Mira Grant lives in California, sleeps with a machete under her bed, and highly suggests you do the same. Mira Grant is the pseudonym of Seanan McGuire — winner of the 2010 John W. Campbell Award for best new writer. Find out more about the author at or follow her on twitter @seananmcguire.

Read an Excerpt


By Mira Grant


Copyright © 2013 Mira Grant
All rights reserved.
ISBN: 978-0-316-21895-5


JULY 2027


Always the dark, warm, hot warm, the hot warm dark, and the distant sound of drumming. Always the hot warm dark and the drums, the comforting drums, the drums that define the world. It is comfortable here. I am comfortable here. I do not want to leave again.

Dr. Morrison looked up from my journal and smiled. He always showed too many teeth when he was trying to be reassuring, stretching his lips so wide that he looked like he was getting ready to lean over and take a bite of my throat.

"I wish you wouldn't smile at me like that," I said. My skin was knotting itself into lumps of gooseflesh. I forced myself to sit still, refusing to give him the pleasure of seeing just how uncomfortable he made me.

For a professional therapist, Dr. Morrison seemed to take an unhealthy amount of joy in making me twitch. "Like what, Sally?"

"With the teeth," I said, and shuddered. I don't like teeth. I liked Dr. Morrison's teeth less than most. If he smiled too much, I was going to wind up having another one of those nightmares, the ones where his smile spread all the way around his head and met at the back of his neck. Once that happened, his skull would spread open like a flower, and the mouth hidden behind his smile—his real mouth—would finally be revealed.

Crazy dreams, right? It was only appropriate, I guess. I was seeing him because I was a crazy, crazy girl. At least, that's what the people who would know kept telling me, and it wasn't like I could tell them any different. They were the ones who went to college and got degrees in are-you-crazy. I was just a girl who had to be reminded of her own name.

"We've discussed your odontophobia before, Sally. There's no clinical reason for you to be afraid of teeth."

"I'm not afraid of teeth," I snapped. "I just don't want to look at them."

Dr. Morrison stopped smiling and shook his head, leaning over to jot something on his ever-present notepad. He didn't bother hiding it from me anymore. He knew I couldn't read it without taking a lot more time than I had. "You understand what this dream is telling us, don't you?" His tone was as poisonously warm as his too-wide smile had been.

"I don't know, Dr. Morrison," I answered. "Why don't you tell me, and we'll see if we can come to a mutual conclusion?"

"Now, Sally, you know that dream interpretation doesn't work that way," he said, voice turning lightly chiding. I was being a smart-ass. Again. Dr. Morrison didn't like that, which was fine by me, since I didn't like Dr. Morrison. "Why don't you tell me what the dream means to you?"

"It means I shouldn't eat leftover spaghetti after midnight," I said. "It means I feel guilty about forgetting to save yesterday's bread for the ducks. It means I still don't understand what irony is, even though I keep asking people to explain it. It means—"

He cut me off. "You're dreaming about the coma," he said. "Your mind is trying to cope with the blank places that remain part of your inner landscape. To some degree, you may even be longing to go back to that blankness, to a time when Sally Mitchell could be anything."

The implication that the person Sally Mitchell became—namely, me—wasn't good enough for my subconscious mind stung, but I wasn't going to let him see that. "Wow. You really think that's what the dream's about?"

"Don't you?"

I didn't answer.

This was my last visit before my six-month check-in with the staff at SymboGen. Dr. Morrison would be turning in his recommendations before that, and the last thing I wanted to do was give him an excuse to recommend we go back to meeting twice a week, or even three times a week, like we had when I first started seeing him. I didn't want to be adjusted to fit some model of the "psychiatric norm" drawn up by doctors who'd never met me and didn't know my situation. I was tired of putting up with Dr. Morrison's clumsy attempts to force me into that mold. We both knew he was only doing it because he hoped to write a book once SymboGen's media blackout on my life was finally lifted. The Curing of Sally Mitchell. He'd make a mint.

Even more, I was tired of the way he always looked at me out of the corner of his eye, like I was going to flip out and start stabbing people. Then again, maybe he was right about that, on some level. There was no time when I felt more like stabbing people than immediately after one of our sessions.

"The imagery is crude, even childish. Clearly, you're regressing in your sleep, returning to a time before you had so many things to worry about. I know it's been hard on you, relearning everything about yourself. So much has changed in the last six years." Dr. Morrison flipped to the next page in my journal, smiling again. It looked more artificial, and more dangerous, than ever. "How are your headaches, Sally? Are they getting any better?"

I bared my own teeth at him as I lied smoothly, saying, "I haven't had a headache in weeks." It helped if I reminded myself that I wasn't totally lying. I wasn't having the real banger migraines anymore, the ones that made me feel like it would have been a blessing if I'd died in the accident. All I got anymore were the little gnawing aches at my temples, the ones where it felt like my skull was shrinking. Those went away if I spent a few hours lying down in a dark room. They were nothing the doctor needed to be concerned about.

"You know, Sally, I can't help you if you won't let me."

He kept using my name because it was supposed to help us build rapport. It was having the opposite effect. "It's Sal now, Doctor," I said, keeping my voice as neutral as I could. "I've been going by Sal for more than three years."

"Ah, yes. Your continued efforts to distance yourself from your pre-coma identity." He flipped to another page in my journal, quickly enough that I could tell he'd been waiting for the opportunity to drop this little bomb into the conversation. I braced myself, and he read:

Had another fight with parents last night. Want to move out, have own space, maybe find out if ready to move in with Nathan. They said wasn't ready. Why not? Because Sally wasn't ready? I am not her. I am me.

I will never be her again.

He lowered the book, looking at me expectantly. I looked back, and for almost a minute the two of us were locked in a battle of wills that had no possible winner, only a different order of losing. He wanted me to ask for his help. He wanted to heal me and turn me back into a woman I had no memory of being. I wanted him to let me be who I was, no matter how different I had become. Neither of us was getting what we wanted.

Finally, he broke. "This shows a worrisome trend toward disassociation, Sally. I'm concerned that—"

"Sal," I said.

Dr. Morrison stopped, frowning at me. "What did you say?"

"I said, Sal, as in, 'my name is.' I'm not Sally anymore. It's not disassociation if I say I'm not her, because I don't remember her at all. I don't even know who she is. No one will tell me the whole story. Everyone tries so hard not to say anything bad about her to me, even though I know better. It's like they're all afraid I'm pretending, like this is some big trick to catch them out."

"Is it?" Dr. Morrison leaned forward. His smile was suddenly gone, replaced by an expression of predatory interest. "We've discussed your amnesia before, Sally. No one can deny that you sustained extensive trauma in the accident, but amnesia as extensive and prolonged as yours is extremely rare. I'm concerned there may be a mental block preventing your accessing your own memories. When this block inevitably degrades—if you've been feigning amnesia this whole time, it would be a great relief in some ways. It would indicate much better chances for your future mental stability."

"Wouldn't faking total memory loss for six years count as a sort of pathological lying, and prove I needed to stay in your care until I stopped doing it?" I asked.

Dr. Morrison frowned, leaning back again. "So you continue to insist that you have no memory prior to the accident."

I shrugged. "We've been over this before. I have no memory of the accident itself. The first thing I remember is waking up in the hospital, surrounded by strangers."

One of them had screamed and fainted when I sat up. I didn't learn until later that she was my mother, or that she had been there—along with my father, my younger sister, and my boyfriend—to talk to my doctors about unplugging the life support systems keeping my body alive. My sister, Joyce, had just stared at me and started to cry. I didn't understand what she was doing. I couldn't remember ever having seen someone cry before. I couldn't remember ever having seen a person before. I was a blank slate.

Then Joyce was throwing herself across me, and the feeling of pressure had been surprising enough that I hadn't pushed her away. My father helped my mother off the floor, and they both joined my sister on the bed, all of them crying and talking at once.

It would be months before I understood English well enough to know what they were saying, much less to answer them. By the time I managed my first sentence—"Who I?"—the boyfriend was long gone, having chosen to run rather than spend the rest of his life with a potentially brain-damaged girlfriend. The fact that I still hadn't recovered my memory six years later implied that he'd made the right decision. Even if he'd decided to stick around, there was no guarantee we'd have liked each other, much less loved each other. Leaving me was the best thing he could have done, for either one of us.

After all, I was a whole new person now.

"We were discussing your family. How are things going?"

"We've been working through some things," I said. Things like their overprotectiveness, and the way they refused to treat me like a normal human being. "I think we're doing pretty good. But thanks for asking."

My mother thought I was a gift from God, since she hadn't expected me to wake up. She also thought I would turn back into Sally any day, and was perpetually, politely confused when I didn't. My father didn't invoke God nearly as much, but he did like to say, frequently, that everything happens for a reason. Apparently, he and Sally hadn't had a very good relationship. He and I were doing substantially better. It helped that we were both trying as hard as we could, because we both knew that things were tenuous.

Joyce was the only one who'd been willing to speak to me candidly, although she only did it when she was drunk. She didn't drink often; I didn't drink at all. "You were a real bitch, Sal," she'd said. "I like you a lot better now. If you start turning into a bitch again, I'll cut your brake lines."

It was totally honest. It was totally sincere. The night she said that to me was the night I realized that I might not remember my sister, but I definitely loved her. On the balance of things, maybe I'd gotten off lightly. Maybe losing my memory was a blessing.

Dr. Morrison's disappointment visibly deepened. Clearing his throat, he flipped to another point in my journal, and read:

Last night I dreamt I was swimming through the hot warm dark, just me and the sound of drums, and there was nothing in the world that could frighten me or hurt me or change the way things were.

Then there was a tearing, ripping sound, and the drums went quiet, and everything was pain, pain, PAIN. I never felt pain like that before, and I tried to scream, but I couldn't scream—something stopped me from screaming. I fled from the pain, and the pain followed me, and the hot warm dark was turning cold and crushing, until it wasn't comfort, it was death. I was going to die. I had to run as fast as I could, had to find a new way to run, and the sound of drums was fading out, fading into silence.

If I didn't get to safety before the drums stopped, I was never going to get to safety at all. I had to save the drums. The drums were everything.

He looked up. "That's an odd amount of importance to place on a sound, don't you think? What do the drums represent to you, Sally?"

"I don't know. It was just a dream I had." It was a dream I had almost every night. I only wrote it down because Nathan said that maybe Dr. Morrison would stop pushing quite so hard if he felt like he had something to interpret. Well, he had something to interpret, and it wasn't making him back off. If anything, it was doing the opposite. I made a mental note to smack my boyfriend next time I saw him.

"Dreams mean things. They're our subconscious trying to communicate with us."

The smug look on his face was too much. "You're about to tell me I'm dreaming about being in the womb, aren't you? That's what you always say when you want to sound impressive."

His smug expression didn't waver.

"Look, I can't be dreaming about being in the womb, since that would require remembering anything before the accident, and I don't." I struggled to keep my tone level. "I'm having nightmares based on the things people have told me about my accident, that's all. Everything is great, and then suddenly everything goes to hell? It doesn't take a genius to guess that the drums are my heart beating. I know they lost me twice in the ambulance, and that the head trauma was so bad they thought I was actually brain-dead. If I hadn't woken up when I did, they would have pulled the plug. I mean, maybe I don't like the girl they say I was, but at least she didn't have to go through physical therapy, or relearn the English language, or relearn everything about living a normal life. Do I feel isolated from her? You bet I do. Lucky bitch died that day, at least as long as her memories stay gone. I'm just the one who has to deal with all the paperwork."

Dr. Morrison raised an eyebrow, looking nonplussed. Then he reached for his notepad. "Interesting," he said.

Somehow I managed not to groan.

The rest of the session was as smooth as any of them ever were. Dr. Morrison asked questions geared to make me blow up again; I dodged them as best as I could, and bit the inside of my lip every time I felt like I might lose my cool. At the end of the hour, we were both disappointed. He was disappointed because I hadn't done more yelling, and I was disappointed because I'd yelled in the first place. I hate losing my temper. Even more, I hate losing it in front of people like Dr. Morrison. Being Sally Mitchell sucks sometimes. There's always another doctor who wants a question answered and thinks the best way to do it is to poke a stick through the bars of my metaphorical cage. I didn't volunteer to be the first person whose life was saved by a tapeworm. It just happened.

I have to remind myself of that whenever things get too ridiculous: I am alive because of a genetically engineered tapeworm. Not a miracle; God was not involved in my survival. They can call it an "implant" or an "Intestinal Bodyguard," with or without that damn trademark, but the fact remains that we're talking about a tapeworm. A big, ugly, blind, parasitic invertebrate that lives in my small intestine, where it naturally secretes a variety of useful chemicals, including—as it turns out—some that both stimulate brain activity and clean toxic byproducts out of blood.

The doctors were as surprised by that as I was. They're still investigating whether the tapeworm's miracle drugs are connected to my memory loss. Frankly, I neither care nor particularly want to know. I'm happy with who I've become since the accident.

Dr. Morrison's receptionist smiled blandly as I signed out. SymboGen required physically-witnessed time stamps for my sessions. I smiled just as blandly back. It was the safest thing to do. I'd tried being friendly during my first six months of sessions, until I learned that I was basically under review from the time I stepped through the door. Anything I did while inside the office could be entered into my file. Since those first six months included more than a few crying jags in the lobby, they were enough to buy me even more therapy.

"Have a nice day, Miss Mitchell," said the receptionist, taking back her clipboard. "See you next week."

I smiled at her again, sincerely this time. "Only if my doctors agree with whatever assessment Dr. Morrison comes up with, instead of agreeing with me. If there is any justice in this world, you'll never be seeing me again."

Excerpted from Parasite by Mira Grant. Copyright © 2013 Mira Grant. Excerpted by permission of Orbit.
All rights reserved. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher.
Excerpts are provided by Dial-A-Book Inc. solely for the personal use of visitors to this web site.

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Parasite 4.1 out of 5 based on 0 ratings. 39 reviews.
AudiobookReviewer More than 1 year ago
Find this complete review and many others at audiobookreviewer dot com Really all I can say is holy crap! Parasite was such a well thought out, well researched book that is seems very plausible more so than your average horror story. At one point I literally got goose bumps all over my body, just creepy, and I surprised my coworkers in the cubicle jungle by laughing out loud at several points. Now I think it was a bit slow to start but Grant had to cover a lot of information, being in the not too distant future, with an all powerfull “pharmaceutical” company. But that was made up for by this, imagine that all your health problems could be cured, if only you took this harmless little pill, and inside the pill live a genetically modified tape worm that will take care of you. Add an awkward and frustrating protagonist, inappropriate relationships, zombie like creatures, heart stopping action scenes, terrifying and grotesque (awesome!) scenes and a freaking awesome “rescue” dog, shake it all up, turn yourself around, whew. Mira Grant has been able to touch me in a way that few authors have and I am so looking forward to the rest of this series playing out.
Anonymous More than 1 year ago
This is a classic. It's on the order of THE PASSAGE
Anonymous More than 1 year ago
You will recognize all the charaters in this book, like meeting old friends for the first time. This is a worthy read.
Books4Tomorrow More than 1 year ago
Let me start by saying that this is the first of Mira Grant’s books I’ve ever read. One of her other books, Feed, is also on my to-read list, but I wasn’t in the mood for a zombie apocalypse book, so I instead started with Parasite, because it sounded a lot more interesting than zombies. Genetically altered tapeworms living inside humans going bonkers? Hell yeah! Was I disappointed by this novel with the curiosity-inducing cover? Yes, and no. Yes, because it has a terribly annoying protagonist who cowers and whines her way through the story, and yes, because the plot is weighed down by scientific terms and medical jargon that made me lose interest a number of times. Also yes, because I saw the BIG twist coming almost from the start. I feel all those reasons warrants a two-star rating, but I’m giving it three stars because of several other elements that kept me riveted to want to finish this novel. The first half of Parasite is incredibly slow and mindnumbingly boring. The biggest downfall for me was Sally holding back valuable information that could’ve prevented the loss of more lives. Her father and sister practically begged her for the information that could help them try to find a cure, or at least understand some of what is happening to the sleepwalkers, yet Sal makes it all about herself and “oh-woe-is-me, nobody-loves-me” screams and cries until she is sedated. Then she gets ticked-off because no-one told her why and with what she was sedated. That’s where she lost my support. Seriously, this is a girl who has a fear of riding in cars (she doesn’t drive) after almost dying in a car accident six years ago, which she can’t remember! I don’t want to go into a rant about the details of her car-crash phobia, but trust me when I tell you she goes to unnecessary extremes.  Sal’s boyfriend, Nathan, is okay. He’s nice, really. That’s all he is, though. Just nice. Sometimes he’s too accepting and placid about Sal’s behavior, and he seems to be more of a convenient support character for when Sal is in a tizzy and needs a quick escape. I do find it hard to believe that he is the only one who loves Sal. Doesn’t she have extended family? Grandparents, cousins, aunts, uncles? Friends? Anyone? Oh, poor Sal. At least I liked her dog, Beverly. She was just this little ray of sunshine, and if there’s ever an apocalypse, I want that doggie by my side. Anyway, one of the supporting characters I hope we would see more of is Tansy. Wow, she kicks butt and she’s really, really…scary. Think psychopath with a wicked sense of humor that should be on Ritalin. Now give that ADHD psychopath two big-ass guns. I give you Tansy. Adam also seems really sweet but we don’t get to know him much, but I sure hope he and Tansy will feature more in the next book. Adam is the Yin to Tansy’s Yang. You’ll love them.  Anyway, back to Sal. I don’t think I’ve stressed enough how much I dislike her. She’s in one word, a killjoy. If you can stick it out through the first half of the book, the second half is much better. A lot of reveals and a little action takes place in the last fifty percent or so. Like I said before, if you’re a savvy reader you might see the BIG twist about Sally coming early on. But it’s a good twist and I think a lot of the plot in the second book depends on this twist. Anyway, if you dislike cliffhanger endings, then this book might not be for you.  Overall I enjoyed Parasite for the idea it is based on. Even though I can’t stand the MC, the story has a lot going for it. There is a ton of info dump, which at times bored me to tears, but I think all this info is important as a basis for the plot. I’m actually looking forward to reading the second book and giving Mira Grant another chance to wow me. If I don’t enjoy the follow-up to Parasite, it might be the end of the road for me and Ms Grant. I honestly hope she gives Sal more of a backbone. 
Anonymous More than 1 year ago
Looking forward to the next one.
bbratley1 More than 1 year ago
First of all I have to say this is one great read!! If you like books set in the future, with a storyline that could remotely be a possibility, this is the book for you!! I am a voracious reader!! By that I mean I read everything, if it's been a bestseller, I've read it! This book took me in from the very first page! I could NOT put it down! A mixture of sci-fi, future, medical, thriller, horror, all rolled up into one great book!! If I'm not pulled in by the first chapter or two, I'm usually done. I don't want to take the time to see if it gets 'good' halfway through. This story had me mesmerized, on the edge of my seat, shocked and amazed. I cannot wait to read more of this authors books!! I love finding an author I've never read that is amazing!! And to think I only had to pay 1.99, what!!?!?! Awesome!
Anonymous More than 1 year ago
Really enjoyed the story and can't wait for the next book. Only complaint would be that the big twist at the end was pretty obvious for more than half the book.
KyMom More than 1 year ago
As usual, Mira Grant (Seanan McGuire) has written a fast paced, edge of your seat novel. The story draws you in with well written characters, a plausible storyline, and soul searching dilemmas. A great story that has you caring about the characters and their search for the truth. You will not want to put this book down as you navigate the twists and turns that the story takes. Very enjoyable. I look forward to book #2 in this series!
Anonymous More than 1 year ago
Awesome read
Sean_From_OHIO More than 1 year ago
Well, if a book gives me the "willies" I guess its a success! Parasites, in general, are on my gross list and Mira Grant does a really good job of making this near future seem possible and skeevy. There were a handful of twists that I didn't see coming. The science is at times in slightly heavy doses which slows down the read. I had some issues with the main character's dialogue given her circumstances but its a minor gripe. The book also isn't a complete story which can be frustrating to some. Each part of a series should be able to stand on its own. Overall, a creepy good read that I will follow-up on.
Anonymous More than 1 year ago
Amazing take on the Frankenstein curse!
phantomdiva More than 1 year ago
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Anonymous More than 1 year ago
A truly enjoyable read! I can't wait to get started on the next book! I was unfamiliar with the works of Mira Grant, but after reading the customer reviews, I decided to read the sample. As soon as I finished, I couldn't get to the "Buy Book" button fast enough! This would make an excellent movie, providing they don't stray too far from the book. I highly recommend purchasing. It's worth every penny!
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Rollerbladingqueen5 More than 1 year ago
The book started out really good neat concept really thought it was going to be a fun read. Then the story got really bizarre I read to end to see if it would redeem itself. It just ended leaving it up in air for another book. I read a lot and this was was very disappointing
Anonymous More than 1 year ago
It felt like one hour of plot stretched to ten hours. Maybe some readers need all the dry prep info to get the plot but I think most of us will "get it" much sooner than that. That makes for a lot of dry reading until the plot unfolds. Over all the story was interesting and the characters fun. I bought this book hoping to find a new science fiction author to read. I will read the next book from this author to see if this was a fluke. Hopefully the next review will be more positive
Anonymous More than 1 year ago
The book uses too much medical jargon bunched together to keep the story line moving at a good pace. Never got to the point of liking the main charecter enough to root for her and the ending was too predictiable.
Anonymous More than 1 year ago
Good story and written pretty well. With a little more time and polish, the author can be in the top twenty. OR she can't finish a story and just end it with "to be continued"
Anonymous More than 1 year ago
I thiink the powers that be were too naive and stupid for big business contenders. I found Sal so mind numbingly annoying that I kept hoping she'd be eaten. Not a great book and I'd give it two and a half stars if that were possible. I did like the dogs but hated all the people. Bit like life really.-----Seahag
improvandrea More than 1 year ago
Can't wait for the second book! This is an easy read, suitable for the beach or leisure time but sucks the reader in with relatable characters including a strong female lead. Both men and women will enjoy this book and without giving spoilers, I'll add that this book has a lot of action without being overly graphic.
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