Ralph Bellamy
Walter Preston

Martin Balsam
Francis Toohey

Steve McQueen
Joseph Gordon

Vivian Nathan
Mrs. Gordon

William Shatner
Kenneth Preston

Ian Wolfe
Judge Marsala

David J. Stewart
Dr. Victor Wallach

Russell Hardie
First Guard

Iggie Wolfington
Court Clerk

Arthur Storch
Seymour Miller

Frank Marth
First Reporter

Eileen Ryan
Betsy Fuller

Milton Selzer
2nd Guard

Rudy Bond
Peter D'Agostino

Dolores Sutton
Norma Lane

Rosetta LeNoire
Mary Ellen Bailey

John McGovern
Dr. Horace Bell

Michael Higgs
Sergeant James Sheeley

Betty Furness
Self / Commercial Spokeswoman

Irene Kane
Courtroom Observer