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 Archie Marshek Editing Max Rée Costume & Make-Up Clem Portman Sound Karl Struss Camera Myles Connolly Production John W. Boyle Camera William LeBaron Production