Death Rides the Range 1939

Synopsis:

A wounded archaeologist crawls into the camp of three kindhearted cowboys. When the cowboys bring him to a nearby trading post, he's murdered after he lets slip a secret about a hidden cave. Investigating his death, Ken and his friends encounter a land dispute between a pair of neighboring ranches, an arrogant German baron and a mysterious shack that houses a great secret.

Directed by: Sam Newfield
Written by: William Lively
Runtime: 58 minutes
Cast:
Ken Maynard
Ken Maynard
Ken Baxter 
Fay McKenzie
Fay McKenzie
Letty Morgan 
Julian Rivero
Julian Rivero
Pancho 
Ralph Peters
Ralph Peters
Panhandle 
John Elliott
John Elliott
Hiram Crabtree 
Charles King
Charles King
Dr. Flotow