“McMahon expertly ratchets up the suspense, but it’s her full-blooded characters that make this thriller stand out from the serial-killer pack.” — People (3 ½ stars)
“Totally engrossing...Hard to put down...A quick read that is highly entertaining.” — Oklahoma City Oklahoman
“A mesmerizing psychological thriller...McMahon fills THE ONE I LEFT BEHIND with unpredictable twists and turns as she explores that great mystery of the human heart.” — South Florida Sun Sentinel
“[A] haunting work of literary suspense ...Grippingly plotted, this intricate, character-driven story seamlessly shifts time.” — Publishers Weekly (starred review)
“McMahon scores a solid touchdown in this creepy but engrossing thriller....Readers will find themselves unable to turn the pages fast enough in this perfectly penned thriller.” — Kirkus Reviews (starred review)
“Haunting and harrowing, The One I Left Behind offers enthralling suspense but also so much more: a richly poignant tale of the families we’re born into and the ones we build ourselves.” — Megan Abbott, author of Dare Me