크레딧 출연 Louis Wolheim Dan Thorn Robert Armstrong Larry Doyle 진 아서 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) 스텝 George B. Seitz Directing James Ashmore Creelman Writing James Daly Camera Fred Bentley Camera George K. Spoor Production John W. Boyle Camera Max Rée Costume & Make-Up William LeBaron Production Myles Connolly Production Archie Marshek Editing Karl Struss Camera Clem Portman Sound