The script held in the Crawford Collection in the AFI Research Collection contains the following character notes (excluding regular characters):
'COLONEL HARRIS: 60 years old. A man of precise, military habits and bearing. Dresses fastidiously. An ex-probation man, he has met no recognition from either this or his military service.
'JIMMY DUNN: 35-40. A rather dour type of criminal, a fitness fanatic, is an expert on Karate and Judo. Cold, calculating and ruthless, can be violent. A killer.
'SELWYN FRANCIS (DUSTY) MILLER: 35. A rough-and-ready type of crim. Has done time, the Colonel was once his parole officer. A mechanic.
'LENNIE FIELDS: 35. A crim. Fairly athletic, smart in his movements.
'DICK LEE: 25-20. A young crim. Rather sensative [sic], a rough up-bringing has prevented him from achieving better things.
'JENNY HARRIS: 25. A young, attractive girl, daughter of the Colonel. An accident has caused her to live in a wheel chair [sic]. Loves her father, even if she thinks he is eccentric.
'PAY CLERK / BODY GUARD: McArthurs Building site. [sic]
'PHILLIP SCHOFIELD: 50 - 60. The very well to do Managing Director of Amalgamated Indemnity. A friend of serveral [sic] high-up policemen, including the Inspector and Vickers.
'2 SECURITY MEN / 1 ELDERLY SECURITY MAN: Amalgamated Security.
'POLICE SEARCH AND RESCUE SQUAD Actuals.
'CAR DRIVER (SCENE B)
'PAY CAR DRIVER (SCENE QQ AND CCC)'.