The script for this episode held in the Crawford Collection in the AFI Research Collection contains the following character notes (excluding regular characters):
'POPPY REID. (20's) Attractive private nurse and wife of Benje.
'LUKE REID. (Mid 30's) Benje's older brother, crippled in a car accident and confined to a wheelchair. Ruggedly good looking and well-built.
'BENJE REID. (Late 20's) Luke's younger brother and Poppy's husband. A weak character, who has allowed himself to be dominated by Luke.
'MRS. WHITE. Wife of alleged murder victim, and friend of Kennedy's.
'MR. WHITE. Friend of Kennedy's, same age. Dies mysteriously.
'DOCTOR COX. Alcholic, but intelligent and discreet. About 60
'FIELDS. Luke's boss. Small part.
'LAURA.Luke's dead wife. Flashbacks only.
'POLICE PHOTOGRAPHER. One scene. No lines. Flashbacks only.'