Fredric March as Buddy Drake / Arthur Drake

Kay Francis as Diana Merrow

Stuart Erwin as Stan Kenney

Juliette Compton as Muriel Preston

George Barbier as Mr. Merrow

Sidney Toler as McPhail

Earle Foxe as J.C. Clark

Lucien Littlefield as Professor Clark

Leslie Palmer as Bronson

Ben Taggart as Crenshaw

John M. Sullivan as Dr. Selous

Gertrude Howard as Snowball