A Rin-Tin-Tin serial presented in 12 episodes. The mysterious Wolf Man is terrorizing settlers in a western town. With the help of Rinty, young Jimmy Carter unmasks the Wolf Man and foils his evil plot.

The settlers of the Kern River valley live in terror as they are menaced by the Indians and also by a mysterious creature known as the Wolf Man. Jimmy Carter and his father are paddling downstream toward the safety of the settlement but an arrow shot from the riverbank strikes Mr. Carter and the canoe overturns. Jimmy reaches the cabin of his father's friend, Allan Scott, who aided by his dog Rinty, unravels a plot to stir up the Indians against the white settlers.—Les Adams <[email protected]>