'Rose. Rose. Pick up, please. I know who killed her. I know who killed my real mum. I've worked it out.' When Rose's flighty stepsister Willow disappears to Cornwall, she can't help but roll her eyes. Willow is always taking off and there is always some kind of emergency. But after Willow discovers that she was adopted and her birth mother died in tragic circumstances, her trip to the coast sparks a search into her past. Two days later, when a package arrives at Rose's house containing a series of four polaroids of four different men, Rose knows that Willow is in trouble. Each photograph a possible murder suspect, their family life begins to unravel, leaving one crucial question unanswered... Who killed Willow's mother and where is Willow now?
