Cast
Sidney Toler
Charlie Chan
Victor Sen Yung
Jimmy Chan (as Sen Yung)
C. Henry Gordon
Dr. Cream
Marc Lawrence
Steve McBirney
Eddie Marr
Henchman Grenock
Charles Wagenheim
Willie Fern, museum watchman
Joan Valerie
Lily Latimer
Marguerite Chapman
Mary Bolton
Hilda Vaughn
Mrs. Joe Rocke
Harold Goodwin
Edwards, radio sound man
Ted Osborne
Tom Agnew (as Ted Osborn)
Archie Twitchell
Carter Lane
Michael Visaroff
Dr. Otto Von Brom
Joe King
Inspector O'Matthews
Charles Trowbridge
Judge
