Arthur Groome
Mary Groome
Sheila Groome
Rosemary Groome
Mary's mother
Mary's father
The Man
Mrs Rogers
Supt. Maxey
Chief Inspector Sullivan
Sergeant Cochcran
Sir Charles Morton
Clive Bedford
Judge
Rose Mallory
Marjorie Danns
Dr Conway
Leslie Scott
Pound
Jefferson
Mr Polaris
Mrs Sims
Alfred Tripp
Mrs Polaris
1st Murdered Girl
Jury Foreman
Clerk of the Court
Ironworks Manager
Mr. Sims
Joe
Court Clerk (uncredited)