Kiss of Death (1947)

On Christmas Eve, downonhisluck exconvict Nick Bianco and his three cohorts rob a jewelry store. Before they can exit the building, however, the injured proprietor sets off his alarm. While attempting to escape, Nick assaults a police officer but is wounded and arrested. The Assistant District Attorney Louis D Angelo tries to persuade Nick to name his accomplices in exchange for a light sentence. Confident that his partners in crime and his lawyer, Earl Howser, will look after his wife and two young daughters while he is incarcerated, Nick refuses and is given a 20year sentence. Three years later, at Sing Sing Prison, after his wife does not write for 3 months, Nick discovers that she has committed suicide.