Peter Graham Scott Director Peter Cushing Rev. Dr. Blyss Actor Yvonne Romain Imogene Actor Patrick Allen Capt. Collier Actor Oliver Reed Harry Cobtree Actor Michael Ripper Jeremiah Mipps Actor Martin Benson Mr. Rash Actor David Lodge Navy bos'un Actor Derek Francis Squire Anthony Cobtree Actor Daphne Anderson Mrs. Rash Actor Anthony Hinds Screenwriter John Temple-Smith Producer Don Banks Original Music Arthur Grant Cinematographer Eric Boyd-Perkins Film Editing Bernard Robinson Production Design Don Mingaye Art Director