Cast
Barbara Bedford
Miss Grant (uncredited)
James Flavin
Cop (uncredited)
Naomi Childers
Patient (uncredited)
Robert Middlemass
Hartney Drew
Claire Du Brey
Dr. Jones' Nurse Hazel
Clem Bevans
Mr. Greene (uncredited)
Victor Kilian
Jack Saunders (uncredited)
Frederick Vogeding
Dr. Jones' Viennese Associate (uncredited)
John Miljan
Dr. Jones
E. Alyn Warren
Dr. Turner (as Fred Warren)