Otto Kruger
— Dr. David Stanley Norton
Leonora Corbett
— Helen Pryor
Francis Lister
— Dr. Henry Pryor
Aileen Marson
— Vera Kennedy
Eric Stanley
— Sir George, Medical Council Prosecutor
Lawrence Anderson
— Norton's Defense Representative
Hubert Harben
— Medical Council President
Hartley Power
— District Attorney Garrett Gale
Charles Mortimer
— Det. Inspector Frederick Webster
James Carew
— Lingard, the butler
Iris Hoey
— Lady Annesley
Jimmy Godden
— Member of Council
Hilda Campbell-Russell
— Nurse