Hoppy and his pals arrive in a remote town to investigate the counterfeiting of both U.S. and Mexican money; his only clues are the name "Mordigan" and a drawing of a comet. He quickly finds out that Mordigan is the town "boss"; but what or who is "the comet", and why are Mordigan and his henchmen intent on persecuting a young woman, her drunken brother, and her deathly ill sister-in-law who've also just arrived in town?
William Boyd
as Hopalong Cassidy
Andy Clyde
as California Carlson
Rand Brooks
as Lucky Jenkins
Elaine Riley
as Nora Murray
James Craven
as Mordigan
Robert B. Williams
as Henchman Pete Walters
Alberto Morin
as Ramon De Lara, faro dealer
Joel Friedkin
as Dr. White
Francis McDonald
as Henchman Longhorn
Lee Tung Foo
as Wong
Herbert Rawlinson
as John Murray
William F. Leicester
as Sid Murray
