H. HumberstoneDirector
Warner OlandCharlie Chan
Katherine DeMilleYvonne Roland
Keye LukeLee Chan
Pauline MooreBetty Adams
Allan LaneRichard Masters
C. GordonArthur Hughes
John EldredgeMr. Cartwright
Morgan WallaceHonorable Charles Zaraka
Jonathan HaleMr. Hopkins
Layne Tom Jr.Charlie Chan Jr
Fredrik VogedingInspector Strasser
Andrew TombesChief of Homicide E. R. Scott
Howard HickmanPolice Doctor
Edward KeaneArmy Colonel (uncredited)
Selmer JacksonNavy Commander (uncredited)
Don BrodieRadio Announcer (uncredited)
George ChandlerShip's Radio Operator (uncredited)
Emmett VoganShip's Officer (uncredited)
Minerva UrecalGang Member Posing as Olympics Matron (uncredited)