Danger Lights: Cast
Louis Wolheim
Dan Thorn
Robert Armstrong
Larry Doyle
Jean Arthur
Mary Ryan
Hugh Herbert
Professor
Frank Sheridan
Ed Ryan
Robert Edeson
Tom Johnson
Alan Roscoe
Jim
William P. Burt
Chief Dispatcher
Jim Farley
Joe Geraghty
James Donlan
Picnic Barker (uncredited)
Frank Mills
Hobo (uncredited)
Lee Phelps
Railroad Worker (uncredited)