Blue Christmas (1970)

Chicago 1941. Meet private eye Richard Stone, celebrating at his Christmas Even office party after beating the draft by way of a bribe. He's a disappointment to his secretary and main squeeze, Katie Crocket, whose brother Ben is fighting overseas; and his honest young employee joey Ernest is guilt-ridden over all the divorce-racket keyhole peeping. Worst of all, his equally sleazy partner, Jake Marley, was murdered a year ago tonight and Stone didn't bother solving Jake's ho-ho homicide.