The latest assignment for respected detective Charlie Chan has come directly from the government and involves the disappearance of a scientist named Harper, who was working on an extremely important serum. When the scientist is killed, Chan must sort through all very likely suspects, including the man's sister and his butler.

Genres

Cast

Sidney Toler

Charlie Chan

Mantan Moreland

Birmingham Brown

Edwin Luke

Eddie Chan

Hardie Albright

Walter Meeker

Janet Warren

Jean Kent

Al Bridge

Sheriff Mack

Edith Evanson

Louise Harper

Dorothy Granger

Stella Graham

Cyril Delevanti

Roth

Jack Ingram

Lloyd Archer

Lester Dorr

Michael Strong

Frank Reicher

Harper