In 1995, six university students moved into the house at 215 Caldwell Street. Months later, one of them was found dead on the sofa the morning after their end-of-year party. His death was ruled an accident by the police. The remaining five all knew it wasnāt, and though they went on with their lives, the truth of what happened to their sixth housemate couldnāt stay buried forever. Twenty years later, all five of them arriveālured separately under various pretensesāat Wolfheather House, a crumbling, secluded mansion on the Scottish isle of Doon. Trapped inside with no way out and no signal to the outside world, the now forty-somethings fight each otherāand the unknown mastermind behind their gatheringāas they confront the role they played in their housemateās death. They are given one choice: confess to their crimes or die.