The Perfect Replacement
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.
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Ava Roberts
Ava Roberts is a clinical psychologist turned author who knows that the most unsettling things often lurk just beneath the surface. She is the author of The Vanishing Neighbor, Juniper Isle, the Thistler Thrillers series, and The Summer House Murder (2026). Kirkus Reviews called The Summer House Murder “a whirlwind domestic thriller that’s also a pitiless anatomy of the costs of motherhood and sisterhood.”Her books are published by Severn River Publishing and Crooked Lane Books.She lives in Massachusetts with her husband, two kids, and an overactive imagination.
Thistler Thrillers
Thistler Thrillers consists of four books. The current recommended reading order for the series is provided below.
