

SEE...The Miracles of Science the "lab" blood test x-ray and ultra-violet ray track down a murderer!
When a Broadway playboy is found dead, it's up to detective Jim Stevens to pick the murderer out of several likely candidates.
William Dieterle
Horton

Hobart Cavanaugh
Muggs Manton

Hugh Herbert
Manny Wales

Henry O'Neill
Inspector Donnelly

Dorothy Burgess
Dolly White

Frank Darien
Manley