Callan

Callan is a 1974 British thriller film directed by Don Sharp and starring Edward Woodward, Eric Porter and Carl Möhner. It was based on the ITV television series Callan which ran from 1967 to 1972. The script by James Mitchell is based on his original TV pilot "A Magnum for Schneider" and the novelization thereof, Red File for Callan, although only the novel is listed in the film's credits.