The script held in the Crawford Collection in the AFI Research Collection contains the following character notes (excluding regular characters):
'CARLOS COSTELLO: About 25. A good looking Italian, with only a trace of accent. However, this becomes more pronounced when he is under stress. Over reacts when his emotional stability is attacked.
'SUSIE JACOBS: About 21. A country girl, with an upper middle class background. She is no longer a little girl, but has not yet learned to handle womanhood.
'JULIA HAMILTON: 5 years older than her husband. Stern woman with strict moralistic attitude to life. Bordering on the bigoted.
'ROGER HAMILTON: Early forties. Basically a weak man seeking an easy way out of his problems.
'IRENE DAVIES: About 33. Unmarried. Enjoys looking after her lover. Tends to be bitchy when pushed.
'MRS COSTELLO: About 42. Typical over emotional Italian widow, with no control over her son. Good hearted.
'MARIA: About 18. An attractive Italian peasant. Romantic. Has poor command of English.
'BARNEY RICHARDS: About 55. Successful Solicitor. A well dressed man who respects Fox, his job and public duty.
'FIRST CONSTABLE BILL HIGGINS: About 30. An efficient uncomplicated man who knows his district intimately.
'ALAN SMITH (FORENSIC): About 32. Easy going, efficient.
'MAN: About 60. Retired Army officer.
'TOM MARSHALL: About 48. Jovial.
'LIZ MARSHALL: About 45.
'MRS. WILSON: About 70'.