Leave It to the Irish (1944)

Private Investigator Terry Moran (James Dunn), who is in love with Nora O'Brien (Wanda McKay) the daughter of Police Detective Tim O'Brien (Arthur Loft), is hired by Mrs. Hamilton to solve the murder of her husband, a fur dealer. Moran is beaten up by the henchmen of Maletti (Jack La Rue), owner of the Black Swan Club and dealer in stolen goods and ordered to quit the case. Later, Terry and Nora search Hamilton's warehouse after they find a bill of sale for a large quantity of liquor, and discover that stolen furs have been substituted for the liquor. Forcing his way into Maletti's office, Terry discovers Maletti dead and he is hit over the head. He comes to to find the police accusing him of the murder.