A doctor becomes the victim of extortionists when one of his patients dies under questionable circumstances.
Dr. Alex Waring
Laura Shelton
Dr. Ian Breck
Henrietta Stevens
Dr. Hearne
Mr. Waring
Matron Fiske
Major Tilling
Inspector Austen
Mrs. Waring
Sister Slater
Anaesthetist
Surgeon
Miss Jenner
Garsten
