Carl Harbord

as Marty Williams

as Inspector Hopkins

as Dr. Doremus

as Coroner

as Minor Role

as Leslie Blake

as Lubbock

as Francis McPhillip

as David Plummet

as Lieutenant Burnham

as Jacques

as George Sandleigh

as Arthur Wardell

as Edgar Gray Doe

as Inspector Sanderson

as Lt. Gunther

as Maurice Avery

as Larry Maitland

as Peter

as Vivian Fairfax

as Richard 'Dick' Holmes

as Michael Turner

as Oliver Desmond