Back Trail is one of the livelier entries in Monogram's Johnny Mack Brown western series. Brown rides into a small town where he becomes embroiled in a blackmail scheme.
Around 1750, in the Dauphiné not far from the Swiss border, a cooper, tired of the injustices affecting the peasants crushed by taxes, went into revolt.
Avary, himself a hustler, is jealous of his beautiful wife. He eavesdrops to catch Vilma, his wife, having supper with a neighbour on the terrace of their manor-house.
Childhood friends move up the economic ladder from slumrat to middle class comfort, but the marriage between two of them is threatened by a bad woman from a nightclub.