SEE...The Miracles of Science the "lab" blood test x-ray and ultra-violet ray track down a murderer!
A wealthy Broadway playboy is found dead, and it comes to light that he was a vicious blackmailer. It's up to police lieutenant Jim Stevens to pick the murderer out of several likely candidates. Meanwhile, Stevens embarks on a torrid affair with Lou Ann Winton, who may or may not be involved.
George BrentLt. Jim Stevens
Margaret LindsayLou Winton
Eugene PalletteSgt. Boggs
Edward EllisDr. Van de Water
Robert BarratAnderzian
Theodore NewtonJack Winton
Murray KinnellHorton
Hobart CavanaughMuggs Manton
Hugh HerbertManny Wales
Henry O'NeillInspector Donnelly
Dorothy BurgessDolly White
Frank DarienManley
Kenneth ThomsonGordon Bates
Ken MurrayMac
Spencer ChartersTeletype Man (uncredited)
