Ken Williams is determined to discover the identity of the mysterious Rattler, who preys upon railroads and transportation companies like that owned by Jane Corwin. The Rattler is especially difficult to catch because of his skill at disguising himself as other people.

• Mascot Pictures
• Ken Maynard
• Verna Hillie
• Hooper Atchley
• Edward Hearn
• Syd Saylor
• Edward Earle
• Al Bridge
• Bob Kortman