Mum-of-two Audrey only looks away from the stroller for a moment, as her daughter runs off across the park. But the next thing she knows, her baby son is rolling towards the lake.

When Claire steps in to prevent disaster, Audrey is beyond grateful. She can't imagine what would have happened if Claire hadn't been there that day.

As Claire and Audrey grow closer, Audrey couldn't ask for more from her new best friend.

But when tragedy strikes for a second time, Audrey discovers that Claire wasn't who she thought she was... and now it's far too late...

A totally addictive and page-turning psychological thriller with a breath-taking twist.

Penny Batchelor is the Amazon bestselling author of psychological thrillers My Perfect Sister and Her New Best Friend. She is currently writing her fourth. Her short story, 'The Dilemma,' appears in UnLocked, an anthology to raise money for The Trussell Trust. Penny is a co-founder and judge of the ADCI Literary Prize for adult fiction by a disabled/chronically ill novelist. She lives in Warwickshire with her husband.