He Can't Stop Doing It is a 1962 West German mystery film directed by Axel von Ambesser and starring Heinz Rühmann, Rudolf Forster and Grit Boettcher. It was loosely based on the Father Brown stories by G. K. Chesterton, Rühmann reprising his role from the 1960 film The Black Sheep. It follows in the post-war tradition of German krimi films, similar to the series of Edgar Wallace adaptations popular at the time.