From the acclaimed author of On My Life comes a fast-paced, gripping and thought-provoking thriller - be careful about sharing too much of your life online ... Lauren is a London-based PR consultant who regularly professes on social media to have the perfect life. But when she learns that the boy she lost her virginity to at fifteen has been murdered during a mugging, she is devastated. It's been years since she saw him, and she is now happily married to Danny and they have a young son, but you never forget your first love. Then Kareem, her second boyfriend, is killed in a hit and run accident. And Phil, the boy she dated in the summer before uni, is stabbed outside a pub in his home town of Brighton. Three is a pattern. Three is terrifying. Someone is killing her exes. Lauren reports her horrifying concerns to the police. But the deaths are spread across the country, with different modus operandi, and are being investigated by different forces; the police officer is sure this is all just a tragic coincidence. But then the messages begin; anonymous notes left at her home. She knows what she has to do next ... find the men she has dated and warn them. But she also needs to put right a devastating secret in her past, before the killings get even closer to home.