Lobo the Marvel Dog

A pair of crooked deputies steal a gold shipment, murder a young boy's father and pin the blame on a cowboy. The murdered man's son and his dog set out to prove the cowboy's innocence.

Attorney Joshua Scranton hires "Budge" Edwards and Larry Donovan, who has just bought into Edwards' detective agency, to protect Estelle Hudson, a client of his who is to inherit three-million dollars the next Thursday. He tells them he has reason to believe the girl is in danger from five relatives who stand to benefit from her death.