O'Brien is "Whispering" Smith, so named because he speaks softly but knows how to fend for himself. The son of a railroad president, Smith is determined to learn the business from the ground up, so he gets a job as a track walker for his dad's rail line. While going about his duties, he meets Nan Roberts (Irene Ware), who is about to sell her Colorado ranch. Smith finds out that there are valuable tungsten deposits on her land and makes certain she won't be cheated by the villains
George O'Brien
as Gordon Harrington, Jr. aka John 'Whispering' Smith
Irene Ware
as Nan Roberts
Kenneth Thomson
as J. Wesley Hunt
Maude Allen
as Mrs. Roberts
Spencer Charters
as Cal Stone
Victor Potel
as Bill Prouty
Edward Keane
as Rebstock
Frank Sheridan
as Gordon Harrington, Sr.
William V. Mong
as Blake
Maurice Cass
as C. Luddington Colfax
Allan Cavan
as Harrington Office Worker (uncredited)
Bess Flowers
as Secretary (uncredited)
