Her daughter vanished without a trace, and everyone with the skills to find her has something to hide.

Three years of peaceful co-parenting convinced Finley that Calvin had finally changed. Then he married Willa.

Beautiful, devoted, and strangely eager to bond with Finley's daughter Campbell--Willa seems too good to be true. When Calvin starts pushing for extended custody and overseas trips, Finley's maternal instincts scream danger. But is the threat coming from Calvin, or from the woman who's replaced her in every way?

Then Campbell vanishes during a shopping trip with Willa.

Security cameras fail. Ransom demands arrive from untraceable sources. Someone with sophisticated tech skills is orchestrating everything--but who? Finley finds herself caught between her AI ex-husband's unlimited resources and his new wife's perfect facade, unable to trust either.

Every hour Campbell remains missing, the technology that was supposed to protect them becomes another weapon turned against Finley. Someone is always watching, always one step ahead--and Finley is running out of time to discover who's pulling the strings before her daughter disappears forever.

Perfect for fans of Jeneva Rose and Freida McFadden, The Perfect Replacement will keep you guessing until the final page--and leave you questioning everything you thought you knew.

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Praise for Ava Roberts:

"Twisted, unpredictable, and deliciously dark, Ava Roberts delivers another must-read thriller." --Minka Kent, Washington Post bestselling author

"You'll be breathless until the last page. You don't want to miss the Thistler Thrillers, they're worth the loss of a good night's sleep." --Shannon Baker, award-winning author of the Kate Fox series

"A clever and chilling take on dating in the digital age that will have you flipping pages, all the way to the jaw-dropping ending. I loved it." --Nicola Sanders, bestselling author of Don't Let Her Stay

"...twists and turns that will keep readers up all night." --Carolyn Ridder Aspenson, USA Today bestselling author

"Brilliantly creepy and seriously addictive." --Valerie Keogh, bestselling author of The Nurse