<P> British detective Richard Poole ( Ben Miller ) is assigned to investigate the murder of a British police officer on the fictional Caribbean island of Saint Marie . After he successfully finds the murderer , he is reluctantly required by his supervisors to replace the victim and stay on as the detective inspector ( DI ) of the island , solving new cases as they appear , and being the object of many fish - out - of - water jokes . At the start of Series 3 , Poole is killed and maladroit London detective Humphrey Goodman ( Kris Marshall ) arrives to investigate the death of his strait - laced predecessor . He then stays in the job as chief investigator on the island . However , in the second half of Series 6 , he follows his heart and resigns so he can stay in London with his new girlfriend Martha Lloyd . His replacement on Saint Marie is DI Jack Mooney , played by Ardal O'Hanlon . </P>
<P> British detective Richard Poole ( Ben Miller ) is assigned to investigate the murder of a British police officer on the fictional Caribbean island of Saint Marie . After he successfully finds the murderer , he is reluctantly required by his supervisors to replace the victim and stay on as the detective inspector ( DI ) of the island , solving new cases as they appear , and being the object of many fish - out - of - water jokes . At the start of Series 3 , Poole is killed and maladroit London detective Humphrey Goodman ( Kris Marshall ) arrives to investigate the death of his strait - laced predecessor . He then stays in the job as chief investigator on the island . However , in the second half of Series 6 , he follows his heart and resigns so he can stay in London with his new girlfriend Martha Lloyd . His replacement on Saint Marie is DI Jack Mooney , played by Ardal O'Hanlon . </P>
where is the show death in paradise set
where is the show death in paradise set
the fictional Caribbean island of Saint Marie
the fictional Caribbean island of Saint Marie