Death in Paradise season 8 episode 8
Episode title: Murder Begins at Home
Old mates Jay, Gerald, Adam and David arrive on Saint Marie ready for the holiday of a lifetime at the Crystal Bay Horse Ranch. The occasion soon turns sour when the island is shaken by a torrential storm, and ranch owner Hannah advises the men to wait it out in their tents. By morning, Jack thinks he has seen the worst of it, until he opens up the locked police station and finds the body of a man lying in the middle of the floor. It's Adam, with scratches on his arms and laceration marks around his neck.
