The script held in the Crawford Collection in the AFI Research Collection contains the following character notes (excluding regular characters):
'RAY JONES Early 20's. Looks younger. Killer who is nothing without a weapon in his hand. Drives.
'LIZ JOHNSON Plump nymphet, about 18. Institutionalized, hard, but dominated by Jones.
'ALICE PRICE About 24. Middle class. Had an unhappy romance. Wants to rebuild her life on her own, away from her family.
'JOAN PRICE Mother, late forties. Understands that the middle class life has made her unable to appreciate her daughter's problems, and unable to help her. But can't change now.
'JACK PRICE Father. 50ish. Ex-farmer who has been intelligent enough to build a small business when the outlook for farmers faded. Comfortable but not wealthy. A man who puts his family first. Capable of violence only in final anger and despair. Drives.
'JOCK BROWN 50ish. Must be small, wispy in stature. He's happily drinking himself to death and has a sense of humour about most things in life. [Note: The character's name on the casting call sheets is 'Edgar Browne', though the 'Browne' has subsequently been crossed out.]
'DOCTOR BEDI
'UNIFORMED CONSTABLE (A) One scene with a line of dialogue otherwise an extra.
'UNIFORMED CONSTABLE (B) Extra.
'UNIFORMED CONSTABLE (C) Extra.
'UNIFORMED CONSTABLE (D) Extra.
'MAURIE TAYLOR Middle aged garage owner. Rough natured, but friendly. Lived in the country all his life.
'AMBULANCE MEN Actual.
'HELICOPTER PILOT Actual.'