The script held in the Crawford Collection in the AFI Research Collection contains the following character notes (excluding regular characters):
'JENNY FRANKLIN: Late 20's. Attractive, intelligent, forthright. A widely travelled, unpretencious [sic] girl (Established in "Voice of the Gun")
'TIM FREER: An English businessman about the same age as Banner and a rather impressive rival. Exudes confidence, breeding, and good taste. Romantically involved with Jenny when she was in England.
'CHARLIE GIBSON: Late 40's. A crack safe-blower until an accident partially disabled his right arm. But he carries his injury well, and until specifically referred to, it's not noticeable. A possessive, humourless man who married late in life a woman he doesn't really understand.
'STELLA GIBSON: His wife of three years. Mid 30's. Ex-showgirl and prostitute. Warm, ample and accomodating [sic]. Married to have kids and is probably neurotic that she hasn't been able to.
'RICKY BURNS: Early 20's. Stella's nephew. A stock hand at the City sale yards. A general layabout who takes life casually. A juvenile record of minor offences - but this is his first attempt at the "big time". Drives.
'EDWARD PALMER: Late 30's to early 40's. A crim with a substantial record and a man capable of almost anything. A rather remote character whose introversion is easily misinterepreted by Gibson as mistrust.
'PAY CLERK: Middle-aged unimpressive and conservative. It's a real surprise when he stands up to the crims.
'SECRETARY: 18. Mod and trendy with a tendency to overdress. Probably her first job since leaving school.
'MOTORIST:
'UNIFORMED CONSTABLE (STUNTMAN): Requires some acting ability.
'YOUNG BOY: As young as possible, preferably about six.
'UNIFORMED POLICE CONSTABLE: Few lines.'
