Victor Sen Yung
Jimmy Chan (as Sen Yung)
Marc Lawrence
Steve McBirney
Eddie Marr
Henchman Grenock
Charles Wagenheim
Willie Fern, museum watchman
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
Emmett Vogan
Prosecuting Attorney
Stanley Blystone
Courtroom Officer
Jimmy Conlin
Tour Bus Barker
Brick Sullivan
Detective Pete
Walter Bacon
Sidewalk Passerby (extra)
David Newell
Attorney at Trial (extra)
