Professor Craig Kennedy is a scientist detective at Columbia University. He uses his knowledge of chemistry and psychoanalysis to solve cases, and uses exotic devices in his work such as lie detectors, gyroscopes, and portable seismographs.

"The Film Mystery" – A young promising actress, Stella Lamar, dies during the shooting of her new movie called "The Black Terror". Since no one can figure out what happened, Professor Kennedy and his sidekick Walter Jameson are called in by a District Attorney to investigate the case. Using his scientific methods Kennedy manages to find a trail.