When an employee at an illegal gambling den dies suspiciously, her sister, Nancy, looks into the situation and falls for Johnny O'Clock, a suave partner in the underground casino. Selfish and non-committal by nature, Johnny slowly begins to return Nancy's affection and decides to run away with her, but conflict within his business threatens their plans. As Johnny tries to distance himself from the casino, his shady past comes back to haunt him.
as Johnny O'Clock
as Nancy Hobson
as Inspector Koch
as Nelle Marchettis
as Harriet Hobson
as Pete Marchettis
as Charlie
as Chuck Blayden
as Slatternly Woman Tenant
as Phil, Hotel Clerk
as Hotel Doorman
as Practical Dealer
as Floorman
as Practical Dealer
as Card Player
as Waiter
as Turk
as Dealer
as Newsboy
as Fleming
as Mrs. Wilson
as Marion
as Hotel Guest
as Man
as Practical Dealer
as Detective
as Card Player
as Redcap
as Punchy
as Gambler
as Practical Dealer
as Fisherman
as Hotel Desk Man
as Onlooker
as Fisherman
as Dealer
as Practical Dealer
as Businessman
as Bodyguard
as Practical Dealer
as Dealer
as Dealer
as Hatcheck Girl
as Dry Cleaner Guy
as Detective
as Card Player
as Dealer
as Dealer
as Practical Dealer
as Dealer
as Passerby
as Practical Dealer
as Policeman
as Dealer
as Bartender
as Practical Dealer
as Bodyguard
as Cop
