The sun-soaked, smash-hit whodunnit returns to BBC One for more murder mysteries with a light touch and a warm heart. DI Neville Parker has more crimes to solve on the blissful island of Saint Marie, while also dealing with the emotional complications of working at close quarters with DS Florence Cassell. With the help of new recruits Naomi and Darlene, the team face some of their toughest cases ever. From a mysterious kidnapping gone awry to a skydiver stabbed in mid-air, things aren't getting any easier for Neville and the team. Meanwhile, Florence faces her toughest challenge yet when she is tasked to go undercover with a ruthless criminal organisation. And Selwyn's world is turned upside down when he encounters a face from his past.