Directed by silent screen serial star Charles Hutchison, this minor -- very minor -- oater featured one David Worth, a bit-part player elevated to B-Western hero status for this occasion only. Riddle Ranch was apparently written for silent star Conway Tearle who had a contract with producer Mitchell Leichter and actually appeared in four similar Westerns released by Beaumont Pictures. Why Tearle didn't appear in this one is anybody's guess. Young David Worth played Bob Horton, a young ranch hand in love with his employer's pretty daughter (June Marlowe of Our Gang fame). Ranch owner Jim Riddle (Rychard Cramer) refuses the match, deeming Horton unworthy of his daughter. The rancher changes his mind, however, when the young cowboy wins the Big Race on Riddle's wild stallion, Black King, despite the shenanigans of villainous Julian Rivero. Rivero proves a sore loser and frames Horton in a killing but everything is worked out in the end. In Tearle's absence, Black King, "the Horse With a Human Brain," found himself star-billed over the nominal leading man. Riddle Ranch was later re-released on television as Western Show Down.