I take a deep breath before I utter the words I’m terrified to say out loud. My therapist waits patiently for me to speak, but nothing could prepare her for what I tell her next. ‘I think I killed my best friend…’

Three years ago, Alice Kelly was found dead in a lake near the house where she was staying with friends for the weekend. Mia was there, and so was her now-husband Tom, yet they have never spoken about what really happened.

But now Mia’s in therapy, she’s having flashbacks. She remembers new details about Alice’s final hours – how they argued, how she threatened to expose Alice’s darkest secret, and how Alice’s lifeless body floated in the inky blue water… Was Mia the one who killed her beloved best friend? And how has she lived with this lie for so long?

The moment Mia confesses to her doctor, her perfect life starts falling apart. When those closest to her keep their distance, Mia starts asking the questions spinning through her mind. Everyone there that weekend has a different account of what happened when Alice died. It’s clear not everyone in Mia’s life has been telling the truth. Someone doesn’t want the past to resurface, and will go to dangerous lengths to keep their deadliest secret…

An absolutely gripping psychological thriller, perfect for fans of The Housemaid, The Perfect Marriage and The Silent Patient. Prepare to stay up all night to find out what really happened to Alice!