Jack and the team uncover a nest of vipers when a zoo owner is killed with a tranquiliser dart and everyone has an alibi.

Jack and the team are mystified when the TV presenter of a holiday programme is found drowned. The spotlight falls on the crew.

Jack and the team must navigate the tempestuous waters of a family divided when a wealthy coffee magnate is shot, but can they find the truth beneath the lies?

A fishing community is excited about the arrival of their festival queen for an annual celebration, but when her boat arrives with only her dead body on board, DI Mooney is left, yet again, with a baffling mystery to solve. What could a missing loaf of bread have to do with the crime? Meanwhile, Florence and Patrice look forward to their wedding, which is only a week away, but a huge strain is put on their relationship when the groom is drawn into the murder case as a former employer and long-time friend of the victim.

The team are left stunned by another murder connected to the killing of festival queen Tiana. But there is a new lead—a phone call relating to their initial suspect—so DI Jack and his officers travel over to nearby Rosalie Island, where the owner and employees of a lucrative investment company all fall under suspicion as they are questioned about the mysterious call. Meanwhile, with emotions running high, Ruby encourages her uncle, Commissioner Patterson, to show his emotional side for once.

The people of Saint Marie go into mourning when Dezzie Dixon, the island's favourite radio presenter, is murdered live on air and Jack must unravel a challenging mystery to find the culprit. However, his task is made all the more difficult when Detective Sergeant Madeleine Dumas from internal affairs arrives to assess working practices following the recent shooting, and proceeds to question the inspector's every move.

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.