When a shot is fired at a charity fundraiser, host Malcolm Powell (Sean Pertwee) is found dead in his study shot at close range through the heart. Malcolm's PA, Vicky Woodward (Lucy Davis), identifies the killer as mystery man named Jack Roberts who had an appointment with Powell and was seen arriving and then fleeing the scene of the crime in a car. Dwayne finds the abandoned car nearby with no clues as to his whereabouts or motive for the killing. A background check on Powell reveals that he and his wife, Jen (Julie Graham), defrauded investors, using a Ponzi scheme, out of millions of pounds back in England. The only clue is an air conditioning unit at full power and an open window in the study. Solving the crime Poole is instructed to take the killer back to London and Camille fears that he will not return when the 4 degrees temperature and rain lure him away from paradise.