Shield for Murder

Shield for Murder is a 1954 film noir codirected by and starring Edmond OBrien as a crooked police detective. It was based on the novel of the same name by William P. McGivern.

Packy Reed Hugh Sanders, the dead mans boss, sends private investigators Fat Michaels Claude Akins and Laddie ONeil to tell Barney he wants to see him. Packy gives Barney one chance to return the money, but Barney is uncooperative.Barney takes his girlfriend, Patty Winters Marla English, to see a house for sale, then slips away to hide the money outside. When he asks Patty to marry him, she accepts. ........

Source: Wikipedia