David Manners as Franklin Blake

Phyllis Barry as Ann Verinder

Gustav von Seyffertitz as Carl Von Lucker

Jameson Thomas as Godfrey Ablewhite

Herbert Bunston as Sir John Verinder

Charles Irwin as Inspector Cuff

Elspeth Dudgeon as Betteredge

John Davidson as Yandoo

Claude King as Sir Basil Wynard

Olaf Hytten as Dr. Ezra Jennings

Evalyn Bostock as Roseanna Spearman

Fred Walton as Henry, Butler

John Power as Driver

Harold Entwistle as Sutter

A.C. Henderson as Robbin

Arthur Thalasso as Detective (Uncredited)