Outside Humanity (An Isla Rivers FBI Suspense ThrillerBook Ten)
"A masterpiece of thriller and mystery."
—Books and Movie Reviews, Roberto Mattos (re Once Gone)
⭐⭐⭐⭐⭐

Amidst Duluth's harshest winter, scenic vistas are transformed into haunting crime scenes by a murderer with an eye for photography. FBI Agent Isla Rivers must think like an artist to see through the killer's lens and prevent further deaths.

OUTSIDE HUMANITY is the tenth book in a long-anticipated new series by #1 bestseller and USA Today bestselling author Blake Pierce, whose bestseller Once Gone (a free download) has received over 7,000 five star ratings and reviews. The series begins with OUTSIDE THE ROOM (book #1).

The Isla Rivers series is a riveting mystery series brimming with suspenseful cat-and-mouse dynamics and unexpected turns that will send shivers down your spine. Its enthralling female lead will capture your affections and keep you engrossed in the pages long after you turn out the lights. Fans of Lisa Regan, Lee Child, and Mary Burton are sure to fall in love.

Future books in the series are also available!

"An edge of your seat thriller in a new series that keeps you turning pages! ...So many twists, turns and red herrings... I can't wait to see what happens next."
—Reader review (Her Last Wish)
⭐⭐⭐⭐⭐

"A strong, complex story about two FBI agents trying to stop a serial killer. If you want an author to capture your attention and have you guessing, yet trying to put the pieces together, Pierce is your author!"
—Reader review (Her Last Wish)
⭐⭐⭐⭐⭐

"A typical Blake Pierce twisting, turning, roller coaster ride suspense thriller. Will have you turning the pages to the last sentence of the last chapter!!!"
—Reader review (City of Prey)
⭐⭐⭐⭐⭐

"Right from the start we have an unusual protagonist that I haven't seen done in this genre before. The action is nonstop... A very atmospheric novel that will keep you turning pages well into the wee hours."
—Reader review (City of Prey)
⭐⭐⭐⭐⭐

"Everything that I look for in a book... a great plot, interesting characters, and grabs your interest right away. The book moves along at a breakneck pace and stays that way until the end. Now on go I to book two!"
—Reader review (Girl, Alone)
⭐⭐⭐⭐⭐

"Exciting, heart pounding, edge of your seat book... a must read for mystery and suspense readers!"
—Reader review (Girl, Alone)
⭐⭐⭐⭐⭐
1147233208
Outside Humanity (An Isla Rivers FBI Suspense ThrillerBook Ten)
"A masterpiece of thriller and mystery."
—Books and Movie Reviews, Roberto Mattos (re Once Gone)
⭐⭐⭐⭐⭐

Amidst Duluth's harshest winter, scenic vistas are transformed into haunting crime scenes by a murderer with an eye for photography. FBI Agent Isla Rivers must think like an artist to see through the killer's lens and prevent further deaths.

OUTSIDE HUMANITY is the tenth book in a long-anticipated new series by #1 bestseller and USA Today bestselling author Blake Pierce, whose bestseller Once Gone (a free download) has received over 7,000 five star ratings and reviews. The series begins with OUTSIDE THE ROOM (book #1).

The Isla Rivers series is a riveting mystery series brimming with suspenseful cat-and-mouse dynamics and unexpected turns that will send shivers down your spine. Its enthralling female lead will capture your affections and keep you engrossed in the pages long after you turn out the lights. Fans of Lisa Regan, Lee Child, and Mary Burton are sure to fall in love.

Future books in the series are also available!

"An edge of your seat thriller in a new series that keeps you turning pages! ...So many twists, turns and red herrings... I can't wait to see what happens next."
—Reader review (Her Last Wish)
⭐⭐⭐⭐⭐

"A strong, complex story about two FBI agents trying to stop a serial killer. If you want an author to capture your attention and have you guessing, yet trying to put the pieces together, Pierce is your author!"
—Reader review (Her Last Wish)
⭐⭐⭐⭐⭐

"A typical Blake Pierce twisting, turning, roller coaster ride suspense thriller. Will have you turning the pages to the last sentence of the last chapter!!!"
—Reader review (City of Prey)
⭐⭐⭐⭐⭐

"Right from the start we have an unusual protagonist that I haven't seen done in this genre before. The action is nonstop... A very atmospheric novel that will keep you turning pages well into the wee hours."
—Reader review (City of Prey)
⭐⭐⭐⭐⭐

"Everything that I look for in a book... a great plot, interesting characters, and grabs your interest right away. The book moves along at a breakneck pace and stays that way until the end. Now on go I to book two!"
—Reader review (Girl, Alone)
⭐⭐⭐⭐⭐

"Exciting, heart pounding, edge of your seat book... a must read for mystery and suspense readers!"
—Reader review (Girl, Alone)
⭐⭐⭐⭐⭐
6.99 Pre Order
Outside Humanity (An Isla Rivers FBI Suspense ThrillerBook Ten)

Outside Humanity (An Isla Rivers FBI Suspense ThrillerBook Ten)

by Blake Pierce
Outside Humanity (An Isla Rivers FBI Suspense ThrillerBook Ten)

Outside Humanity (An Isla Rivers FBI Suspense ThrillerBook Ten)

by Blake Pierce

eBook

$6.99 
Available for Pre-Order. This item will be released on May 18, 2026

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Overview

"A masterpiece of thriller and mystery."
—Books and Movie Reviews, Roberto Mattos (re Once Gone)
⭐⭐⭐⭐⭐

Amidst Duluth's harshest winter, scenic vistas are transformed into haunting crime scenes by a murderer with an eye for photography. FBI Agent Isla Rivers must think like an artist to see through the killer's lens and prevent further deaths.

OUTSIDE HUMANITY is the tenth book in a long-anticipated new series by #1 bestseller and USA Today bestselling author Blake Pierce, whose bestseller Once Gone (a free download) has received over 7,000 five star ratings and reviews. The series begins with OUTSIDE THE ROOM (book #1).

The Isla Rivers series is a riveting mystery series brimming with suspenseful cat-and-mouse dynamics and unexpected turns that will send shivers down your spine. Its enthralling female lead will capture your affections and keep you engrossed in the pages long after you turn out the lights. Fans of Lisa Regan, Lee Child, and Mary Burton are sure to fall in love.

Future books in the series are also available!

"An edge of your seat thriller in a new series that keeps you turning pages! ...So many twists, turns and red herrings... I can't wait to see what happens next."
—Reader review (Her Last Wish)
⭐⭐⭐⭐⭐

"A strong, complex story about two FBI agents trying to stop a serial killer. If you want an author to capture your attention and have you guessing, yet trying to put the pieces together, Pierce is your author!"
—Reader review (Her Last Wish)
⭐⭐⭐⭐⭐

"A typical Blake Pierce twisting, turning, roller coaster ride suspense thriller. Will have you turning the pages to the last sentence of the last chapter!!!"
—Reader review (City of Prey)
⭐⭐⭐⭐⭐

"Right from the start we have an unusual protagonist that I haven't seen done in this genre before. The action is nonstop... A very atmospheric novel that will keep you turning pages well into the wee hours."
—Reader review (City of Prey)
⭐⭐⭐⭐⭐

"Everything that I look for in a book... a great plot, interesting characters, and grabs your interest right away. The book moves along at a breakneck pace and stays that way until the end. Now on go I to book two!"
—Reader review (Girl, Alone)
⭐⭐⭐⭐⭐

"Exciting, heart pounding, edge of your seat book... a must read for mystery and suspense readers!"
—Reader review (Girl, Alone)
⭐⭐⭐⭐⭐

Product Details

BN ID: 2940184466934
Publisher: Blake Pierce
Publication date: 05/18/2026
Series: An Isla Rivers FBI Suspense Thriller , #10
Sold by: Barnes & Noble
Format: eBook

About the Author

Blake Pierce is the author of the MACKENZIE WHITE mystery series, comprising fourteen books; of the AVERY BLACK mystery series, comprising six books; of the KERI LOCKE mystery series, comprising five books; of the MAKING OF RILEY PAIGE mystery series, comprising six books; of the KATE WISE mystery series, comprising thirteen books; of the CHLOE FINE psychological suspense mystery, comprising six books; of the JESSIE HUNT psychological suspense thriller series, comprising forty-six books (and counting); of the AU PAIR psychological suspense thriller series, comprising three books; of the ZOE PRIME mystery series, comprising six books; of the ADELE SHARP mystery series, comprising sixteen books, of the EUROPEAN VOYAGE cozy mystery series, comprising six books; of the LAURA FROST FBI suspense thriller, comprising eleven books; of the ELLA DARK FBI suspense thriller, comprising thirty-one books (and counting); of the A YEAR IN EUROPE cozy mystery series, comprising nine books, of the AVA GOLD mystery series, comprising six books; of the RACHEL GIFT mystery series, comprising twenty-three books; of the VALERIE LAW mystery series, comprising nine books; of the PAIGE KING mystery series, comprising eight books; of the MAY MOORE mystery series, comprising eleven books; of the CORA SHIELDS mystery series, comprising eight books; of the NICKY LYONS mystery series, comprising eight books, of the CAMI LARK mystery series, comprising ten books; of the AMBER YOUNG mystery series, comprising eight books; of the DAISY FORTUNE mystery series, comprising five books; of the FIONA RED mystery series, comprising thirteen books; of the FAITH BOLD mystery series, comprising twenty books (and counting); of the JULIETTE HART mystery series, comprising five books; of the MORGAN CROSS mystery series, comprising eighteen books; of the FINN WRIGHT mystery series, comprising eleven books (and counting); of the SHEILA STONE suspense thriller series, comprising fourteen books; of the RACHEL BLACKWOOD suspense thriller series, comprising eight books; of the THE GOVERNESS psychological suspense thriller series, comprising nine books (and counting); of the JENNA GRAVES mystery series, comprising twelve books (and counting); of the ALISON PAYNE suspense thriller series, comprising twelve books (and counting); and of the new ISLA RIVERS suspense thriller series, comprising twelve books (and counting).
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