Lord of the Flies meets And Then There Were None... but with Instagram and too much Prosecco.

Poppy Greer is getting married and four of her old schoolmates are to be her trusted bridesmaids. They may have drifted but true friendships last a lifetime, don't they? Plus, who would pass on a free first-class ticket to white sands and bottomless cocktails on a private Caribbean island?

But the women have underestimated their host, and each other. And as their darkest secrets are revealed, the trip of their dreams becomes the hen do from hell.

Will anyone make it off the island alive?