What You Did by Claire McGowan
The Blurb:
“A brilliant, breathless thriller that kept me guessing to the last shocking page.” —Erin Kelly, Sunday Times bestselling author of He Said/She Said
An Amazon Charts and Washington Post bestseller.
It was supposed to be the perfect reunion: six university friends together again after twenty years. Host Ali finally has the life she always wanted, a career she can be proud of and a wonderful family with her college boyfriend, now husband. But that night her best friend makes an accusation so shocking that nothing will ever be the same again.
When Karen staggers in from the garden, bleeding and traumatised, she claims that she has been assaulted—by Ali’s husband, Mike. Ali must make a split-second decision: who should she believe? Her horrified husband, or her best friend? With Mike offering a very different version of events, Ali knows one of them is lying—but which? And why?
When the ensuing chaos forces her to re-examine the golden era the group shared at university, Ali realises there are darker memories too. Memories that have lain dormant for decades. Memories someone would kill to protect.
About Claire McGowan:

Claire McGowan grew up in a small village in Northern Ireland. After a degree in English and French from Oxford University she moved to London and worked in the charity sector. THE FALL is her first novel, which is followed by a series starring forensic psychologist Paula Maguire. She also writes as Eva Woods.
My Review:
Six friends who have known each other almost twenty-five years from university, are reunited at Alison and Mike's home. Their strong friendship is torn apart after a long night's drinking, when Karen, (one of the friends) is found bruised and bleeding alleging she has been raped by Alison's husband Mike. The plot thickens as the book progresses with plenty of twists and different angles to have kept me gripped.