The script held in the Crawford Collection in the AFI Research Collection contains the following character notes (excluding regular characters):
'BILLY GARRET A crim and Patterson's boyhood mate; strong and well built; must be able to move well. Lead role.
'GRAN Billy's grandmother. Major role.
'LEILA GARRET Billy's wife. Young. European. Major role.
'McGEORGE Runs a baccarat school; Billy's boss. 40-45. Tough looking gent. Important role.
'ALISTAIR JAMES Preferably short; a snappy dresser; puts on "front" but loses it completely when he's had a few to drink. 35-40. Important role.
'SUE Young. A good looker. Subtle. One scene, but important.
'BARMAID 35-45. Buxom and brassy; her looks have faded. Two scenes but important.
'TWO HENCHMEN Both about 30. Mainly involved in action. Both evil looking.
'JOHN ARCHER The victim. About 50; a gunman past his prime.
'CROUPIER OR DEALER About 30. Suave. Prefer. actor experienced handling money.
'MONEY HANDLER About 40. Prefer. actor experienced handling money.
'BACCARAT PLAYERS (EXTRAS) This is a big baccarat school.'