The team are baffled when an archaeologist is poisoned during a dig but there is no evidence to prove how it was done. Meanwhile, Neville tests his skills in an island crab-cooking competition.

Neville is left perplexed when a lottery winner is found dead but her body then disappears. JP has an unruly new officer to train whilst preparing for the birth of his twins.

Neville’s attempts to embrace island life backfire when, during a game of beach volleyball, a sandfly bite lands him in hospital. His time on the ward takes a shocking turn when a nurse takes her own life during a night shift. Meanwhile, Marlon gives JP some unusual advice to help his twins sleep.

A celebrated concert pianist murdered one night in his studio. Catherine’s friendship with the victim’s family puts her in unexpected danger. The first of a two-part story.

The team have their work cut out in this dramatic conclusion to the two-parter. Neville must solve a mystery from the past that unlocks the truth of who murdered the concert pianist and why. Help is at hand, though, with the return of a former sergeant.

A stag do goes awry when the host of their fishing trip is found harpooned on a beach the next morning. But as their boat never moved, how could any of them have done it?

A man confesses to murdering his boss despite being unable to remember what happened. Convinced that things aren’t as simple as they seem, Neville determines to uncover the truth and unveil the real killer.