크레딧 출연 Donald Sumpter Donald Neilson Debbie Farrington Lesley Whittle Marjorie Yates Neilson's Wife Sylvia O'Donnell Neilson's Daughter Andrew Burt Lesley's Brother Alison Key Lesley's Sister-in-Law Ruth Dunning Lesley's Mother David Swift Det. Chief Superintendent Michael Barrington Lila Kaye Delia Paton Edwin Apps Gerry Sundquist Ruth Kettlewell Graham Ashley Brenda Cowling Lyn McCarthy Paul McCarthy Peter Copley Barbara New Jack Galloway Valerie Holliman Paul Luty Richard Aylen Charles Pemberton John Eastham Anthony Naylor John Dixon Christopher Holroyd Loftus Burton 스텝 Ian Merrick Directing Joanne Leighton Writing Michael Armstrong Writing Stan Phillips Crew Carlotta Barrow Art Teddy Darvas Editing Joseph Mangine Camera Jim Harris Lighting Peter Long Production Richard Arnell Sound Irene Lamb Production Alan Jones Camera Ian Merrick Production Jeanette Freeman Costume & Make-Up Neville Smallwood Costume & Make-Up