The script held in the Crawford Collection in the AFI Research Collection contains the following character notes (excluding regular characters):
'FRED HAYES: Early 20's. [Note: '20' is written in blue ink above the character's age.] University student from impoverished home. Ardent political and religious activist but unpopular with most other students.
'NORM HAYES: Mid 50's. Has affection for wife and children but can be brutal and sadistic.
'MARGE HAYES: Mid 50's. Norm her second husband. She still suffers pangs of guilt as a result of having sent her adopted son back to a home at the age of six.
'GAIL HAYES: About 20. [Note: '19' is written in blue ink above the character's age.] Long hair, fairly attractive. Warm-hearted - has problem of her own but sympathetic towards her brother Fred, and "stepbrother" Ken.
'KEN WEBSTER: Aged 28. [Note: '24' is written in blue ink above the character's age.] Marge's adopted son by former marriage. Rejected by her after her second marriage. Of below-average intelligence, this rejection has left its mark.
'MARTIN FOSTER: About 20. Student friend of Fred, financially better off. Gail's boyfriend. Physically strong, but morally weak and vacillating.
'MRS. FOSTER: Late 40's. Martin's mother. Socially active, she's ceased to exhibit more than a mild interest in her son.
'BILL SMYTHE: About 20. Short, seedy youth. Ken's mate.
'FATHER REGAN: Mid 40's. In charge of boys' home. Irish?
'MR. JARVIS: Mid 30's. Swimming-pool manager.
'CHARLES WEBSTER: Approx. 54 years. Pilot. Bitter about separation from wife.
'MRS. METCALFE: Late 60's. Boarding-house landlady.
'MR. RYDER: Mid 40's. Manager of Starlight drive-in.
'JACK SMITH: Attendant, Starlight drive-in.
'MECHANIC:
'MIDDLE-AGED WOMAN:
'2 POLICEMEN'.