Lew Ayres

Oliver Duffy

Laraine Day

Edwina 'Eddie' Brown

Basil Rathbone

Cesar Ferrari / Dr. H. Santelle

Walter Kingsford

Dr. Cromwall

Miles Mander

Dr. Kurt Immelman

Charles D. Brown

Police Inspector Gallagher

Cliff Clark

Police Lieutenant Allison

James Flavin

Police Lieutenant Schaeffer