Sidney Toler as Charlie Chan

Fortunio Bonanova as Insp. Luis Carvero

Benson Fong as Tommy Chan

Robert Emmett Keane as Alfred Wyans (as Robert E. Keane)

Willie Best as Chattanooga Brown

Carol Hughes as Marguerite Fontain

Marjorie Hoshelle as Countess Irena Masak

Barton Yarborough as Joseph Brandish

George Meeker as Edmond Slade

Don Costello as Charles Masack

Charles Trowbridge as Prentiss

Mildred Boyd as Josephine

Barbara Jean Wong as Iris Ling (as Jean Wong)

Donald D. Taylor as Walter Dorn (as Donald Dexter Taylor)