The Mantrap
The Mantrap is a 1943 American mystery film directed by George Sherman and written by Curt Siodmak. The film stars Henry Stephenson, Lloyd Corrigan, Joseph Allen, Dorothy Lovett, Edmund MacDonald and Alice Fleming. The film was released on April 13, 1943, by Republic Pictures. Plot. After being first at the scene of an accident, retired crime expert from Scotland Yard, Sir Humphrey Quilp, is given a “birthday present” of the fun of solving the crime by the Assistant District Attorney who is already sure of the identity of the murderer. Over the objections of his family, Quilp takes  on the task using old fashioned logic and the knowledge of human nature instead of modern (1943) methods like fingerprints and microscopes. At the end of the day Quilp has revealed the killer, redeemed the innocent, and proved that he still has what it takes even if he is ready for a rest.