Humphrey's investigation uncovers several potential motives among the hotel staff and family:
(the receptionist) had been confronted by Charlie over a "racket" he was running at the hotel. Delitti in Paradiso 6x3
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 brother of owner Elliot
(the barman) claimed Charlie had helped him find work to atone for a past indiscretion, but he remains a person of interest. is murdered. Death in Paradise