In this western, a federal marshal is jumped and robbed while en route to Gunsight. He immediately follows the bandit, a gunfighter named Raven, to a poisoned watering hole. The outlaw, not knowing the water is tainted, drinks it and dies just as the lawman comes up. The marshal retrieves his stolen stuff and a valuable letter, that links the dead villain to an outlaw ring in town. Armed with this letter, the marshal impersonates the outlaw and is then able to round-up Gunsight's high-ranking crooks. ~ Sandra Brennan, Rovi