New series. After being introduced at the end of the last series, Ardal O'Hanlon returns for his first full series as Detective Inspector Jack Mooney, working on the Caribbean island of Saint Marie, where the sun shines all day and it seems half the residents are killers-in-waiting. The DI and his team are tested when a hotel billionaire's fiancee falls from a balcony the day before her lavish wedding. Everything points to suicide - except for the fact that the victim only painted one fingernail. Danny John-Jules and Josephine Jobert co-star, with guest appearances from Denis Lawson, Elizabeth Berrington and Jemima Rooper.