Meet Mr. Callaghan

The private eye (Derrick de Marney) investigates the case of the murdered uncle. Cynthis: Harriette Johns. William: Peter Neil. Mayola: Adrienne Corri. Gringall: Trevor Reid. Jeremy: John Longden. Bellamy: Roger Williams. Paul: Frank Henderson. Formula. Charles Saunders directed., This film stars Derrick DeMarney in the title role. In this “pilot” for a proposed Callaghan movie series, Slim Callaghan is required to solve the death of a much-hated rich man. This movie made money (no surprise, since it cost practically nothing to make), but no sequels resulted., The private eye investigates the case of the murdered uncle.