Mr. Dean's body is found face down in the fireplace, his features burned beyond recognition. Detectives Patrick (Paul Langton) and Rawley (Robert Shayne) arrest nightclub-singer Eden Lane (Barbara Payton) and she is convicted of the crime. On the way to prison, Eden sees a man through the train window, identifying him as the murderer, and Patrick and Eden jump from the train to search for the man. In a series of plot twists, the murderer is found, and Eden and Patrick are reunited. Directer Edgar G. Ulmer uses flashbacks and elliptical editing to good effect, but the film lacks any strong visual or narrative center. Barbara Peyton delivers a great performance as the ambiguous, mysterious femme-fatale. While still of some interest, Murder is My Beat lacks the power and grim vision of Ulmer's bleak gem, Detour.