Her One Mistake

Her One Mistake

What should have been a fun-filled, carefree day takes a tragic turn for the worse for one mother when her best friend’s child goes missing in this suspenseful, compulsively readable, and darkly twisted psychological thriller.

It all started at the school fair…

Charlotte was supposed to be looking after the children, and she swears she was. She only took her eyes off of them for one second. But when her three kids are all safe and sound at the school fair, and Alice, her best friend Harriet’s daughter, is nowhere to be found, Charlotte panics. Frantically searching everywhere, Charlotte knows she must find the courage to tell Harriet that her beloved only child is missing. And admit that she has only herself to blame.

Harriet, devastated by this unthinkable, unbearable loss, can no longer bring herself to speak to Charlotte again, much less trust her. Now more isolated than ever and struggling to keep her marriage afloat, Harriet believes nothing and no one. But as the police bear down on both women trying to piece together the puzzle of what happened to this little girl, dark secrets begin to surface—and Harriet discovers that confiding in Charlotte again may be the only thing that will reunite her with her daughter....

This breathless and fast-paced debut—perfect for fans of Big Little Lies and The Couple Next Door—takes you on a chilling journey that will keep you guessing until the very last page.
  • Gallery Books | 
  • 320 pages | 
  • ISBN 9781501194221 | 
  • January 2019
List Price $26.00 (price may vary by retailer)
Ships on or around January 8, 2019
Pre-order now from another retailer

Reading Group Guide

This readers group guide for Her One Mistake includes an introduction, discussion questions, and ideas for enhancing your book club. The suggested questions are intended to help your reading group find new and interesting angles and topics for your discussion. We hope that these ideas will enrich your conversation and increase your enjoyment of the book


When Harriet Hodder asks a favor of her best friend, Charlotte Reynolds, Charlotte is happy to oblige. Harriet’s young daughter, Alice, will join Charlotte and her three children at the school fair while Harriet attends an accounting seminar. Since Harriet has never left Alice with anyone before, Charlotte encourages her friend to enjoy her time away.

But when Alice goes missing at the fair, the police investigating the case uncover conflicting evidence relevant to the girl’s disappearance. Could Alice’s vanishing have anything to do with the abduction of a young boy in a nearby village? Does the fact that Charlotte was looking at social media on her phone when Alice disappeared point to her unsuitability as a caregiver? Why doesn’t the alibi of Alice’s father, Brian Hodder, hold up under scrutiny? Is Harriet’s absentmindedness a figment of her husband’s imagination, or proof of something more sinister at work?

Topics and Questions for Discussion

1. Compare and contrast Harriet Hodder and Charlotte Reyn see more

About the Author

Heidi Perks
Photograph © Andy Rapkins

Heidi Perks

Heidi Perks was born and raised in the seaside town of Bournemouth on the south coast of England. After moving up to London for a short stint, she has since moved back to Bournemouth where she now lives with her husband and two children. Heidi has been writing since she was small, though for too many years her day time job and career in marketing got in the way. Now she writes full time and cannot think of anything she would rather be doing.