"Originally published in 2015 in the United Kingdom by Avon, an imprint of HarperCollins Publishers, UK"--Title page verso

Best friends are there for each other through thick and thin. You trust them with your life. At least that's what Emma, Daisy, Leanne and Al think. But all that changes when they embark on a trip of a lifetime together. When they return home, only two of them are left alive and the group has been torn apart by lies and deception. Many years later, when the dust has settled and life has moved on, one girl receives a threatening letter. Someone knows the truth about what happened on that holiday and will stop at nothing to expose it