Working undercover, Allen and sidekick Mendoza are out to stop the mail train robberies. Rivers and his gang are the culprits and by joining up with them, they hope to get the evidence they need.
Tom Keene
Frank Yaconelli
LeRoy Mason
Jean Trent
Fred Kohler Jr.
Glenn Strange
Gene Alsace
James Sheridan
Karl Hackett
Prince
Victor Adamson
Herman Nowlin
Tex Palmer