The script held in the Crawford Collection in the AFI Research Collection contains the following character notes (excluding regular characters):
'LUCILLE LESTER. 55-60. Well spoken, articulate, intelligent. Despite a record of hallucinating, she can be calm and lucid. Withstands a lot of pressure before going to pieces.
'ROGER WILLIS. 25-30. Average speech. Big, fit man. Police are hard pressed to overpower him. He is handsome and dresses well.
'LINDSAY BARKER. 35-40. Rough speech. Hardened crim. Know what he's at. Must drive.
'TERRI REYNOLDS. 25. Doctor's secretary/mistress. Intelligent, seemingly pleasant, well spoken, attractive. Must drive.
'JAMES SLATER. 55. Well spoken. Company director with friends in the right places. Conservative.
'DOCTOR EDWARDS. 50. Psychiatrist. Well spoken, stylish, relaxed, detached.
'NODDY BAINES. Professional go-between.
'PRESTON. Uniformed police constable.
'WOMAN. 30. Housewife type. Rough speech.'