(the barman) claimed Charlie had helped him find work to atone for a past indiscretion, but he remains a person of interest.
The victim is , the brother of the hotel's owner, Elliot Taylor. He is found stabbed to death in his room, but the investigation is complicated because the room was locked from the inside, making it appear as an "impossible" crime.
Humphrey takes Martha to the hotel La Maison Cecile but on their first night Charlie Taylor, brother of owner Elliot, is murdered. Death in Paradise, Series 6, Episode 3 - BBC One