"John Casey has accomplished the nearly impossible-to follow up his singular, thrilling, and insightful debut novel with an even more impressive sequel. As someone who knows quite a bit about the clandestine world, I found Evolution to be a crisp, hard-hitting and realistic yarn that will leave you wanting more."
-U.S. AMBASSADOR LUIS MORENO assisted in the pursuit of Pablo Escobar and led implementation of Plan Colombia
"Evolution is a riveting story...deserves top billing in any thriller or espionage fiction collection."
-Midwest Book Review
"With strong mechanical and technological precision, Evolution gives readers solid grounding and pulls them through realistic 21st-century action. A strong spy thriller with global and personal stakes"
-Independent Book Review (IBR)
"John Casey has done it again-delivering a page turner that combines spy novel with psychological thriller, an imperfect, unique, and compelling lead, a carefully-crafted storyline, and twists along the way the reader won't see coming!"
-DONNA KOROS STRAMELLA, author of Coffee Killed My Mother