Death in Paradise Season 4 (2015)

When the owner of a rum distillery is murdered during a seance, all the clues point to the prime suspect being a ghost. With DI Humphrey Goodman and his team a man down, Commissioner Selwyn steps in to help them look for a more earth-bound killer.

The owner of a surf school is shot dead and robbed in his workshop, despite it being locked from the inside, and there being no other possible way out.

Saint Marie Heritage Society celebrate the island's history with a meal, but all the guests end up with food poisoning. When the president of the society dies from a significant amount more of the poisoning, a murder investigation begins, with Humphrey looking at the guests motives

Humphrey is called to a hotel when a bride is found dead in her room the morning after her hen party. The team quickly establish that the bride knew her murderer, as she willingly let them into her room before she was killed. Camille ponders her future in Saint Marie when she is offered a permanent job in Paris.

With Camille gone, Florence is promoted to Detective Sergeant, and a new officer joins the team on Saint Marie. The lead singer of a pop group is electrocuted in a swimming pool, and while all the suspects were in the studio at the time of the murder.

The residents of Saint Marie celebrate when the volleyball team proceed to the final of the Inter-Island Volleyball Championships. Celebrations are soon shortened when a high-profile player is found dead on the beach, stabbed through the heart.

DI Goodman is embroiled in the cut-throat world of corporate team building when an entrepreneur is killed, but a surprise revelation from one of the suspects threatens to derail the investigation.

When a prisoner is killed in their custody, DI Goodman and the team are under pressure to solve the case quickly. Humphrey's father visits Saint Marie intent on meddling in his son's life.