Obsada:
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Sidney Toler
Charlie Chan
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Victor Sen Yung
Jimmy Chan
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C. Henry Gordon
Dr. Cream
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Marc Lawrence
Steve McBirney
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Joan Valerie
Lily Latimer
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Marguerite Chapman
Mary Bolton
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Ted Osborne
Tom Agnew
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Michael Visaroff
Dr. Otto Von Brom
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Hilda Vaughn
Mrs. Joe Rocke
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Charles Wagenheim
Willie Fern
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Archie Twitchell
Carter Lane
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Eddie Marr
Grenock
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Joe King
Inspector O'Matthews
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Harold Goodwin
Edwards
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Stanley Blystone
Bailiff
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Jimmy Conlin
Barker
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David Newell
Attorney at Trial
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Charles Trowbridge
Judge
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Emmett Vogan
Prosecuting Attorney