Kane Richmond
— Jim Marsden
Kay Aldridge
— Patricia Harding
Roy Barcroft
— Carter / Kane
Clancy Cooper
— Yank
Marshall Reed
— Tommy (as Marshall J. Reed)
Oscar O'Shea
— John Galbraith [Chs. 1, 7, 15]
Forrest Taylor
— Dr. Oliver Harding [Chs. 1-4]
Hal Taliaferro
— Lawson [Ch. 1, 6-7]
Edward Keane
— Fredrick Vorhees [Ch. 1]