 Grouchy old rancher John Duncan (Charles K. French) has hidden $50,000 and is writing a note telling of its hiding place, but is murdered by a mysterious cloaked intruder known as The Phantom, before he can finish the line..."if you will follow...". His son Tom Duncan (Guinn Williams as "Big Boy" Williams) with his pal Windy (Bud Osborne)comes to town seeking revenge on the killer of his father.He has several suspects---ranch foreman Scarface (Vic Potel); ranch cook Sing Fat(Louis Vincenot, as Louis Vin Cenet); lawyer Burt Hartecker (William Gould) and neighboring rancher Tap Smiley (Lafe McKee), who didn t like the father and likes the son even less because he is trifling around (or something) with Tap s daughter, Nancy (Connie Bergen.) But a couple of them disappear, possibly---it s hard to tell since most of the film contains the most confused editing continuity in the history of B-westerns and the 5th worse barfight in the genre (the first four occur in Victor Adamson films.)Sing Fat is the most obvious red herring, especially after he poisons a dog for no apparent reason since he isn t the killer and didn t poison the old man afterwards anyway. To find the money, follow the matches. Sing Fat is smirking around at the end indicating he thinks there is still a reel to go. This was remade as an entry in Monogram s Range Busters  series as "Saddle Mountain Roundup" but "Big Boy Rides Again" writer William L. Nolte, serving as production manager of "Saddle Mountain Roundup", wisely chose to let writers Earl Snell and John Vlahos take the blame on the remake.