Scientists assembled to prove their methods are effective in criminal investigation try to solve a series of murders.
Bruce Bennett
Patrick Norris
Florence Rice
Lola Hobbs
Barton MacLane
Sam O'Donnell
Joe Downing
Lou Boyd
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August 15, 1940
1h 2m
10.0
James Moore
Dean Jennings, Robert Tasker
1
Columbia Pictures
US
Joseph Crehan
Police Chief Hobbs
Howard Hickman
Dr. Talbot
Edward Van Sloan
Prof. Holtz
P.J. Kelly
Prof. Cordet
Don Beddoe
Maj. Blaine
William Forrest
Mr. Brooks
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