Along with the town undertaker, a Man follows his brother's killer (George Eastman) to Mexico, where sinister (and I mean sinister!) gringo Horst Frank forces his Mexican slaves to fight to the death using steel claws. Frank then sets his sights on Eastman's secret goldmine, holding him captive and torturing him until the justice seeking brother comes to take him away.

A fairly standard revenge plot is helped along nicely by some interesting ideas, unusual developments, and some fairly graphic violence, keeping things exciting and entertaining throughout.

Due to the crackpot nature of some of the film's plot elements, this seems more like a drive-in movie than a spaghetti western.

Horst Frank is a lot of fun to watch as the deranged, yet urbane bad guy, while George Eastman is good and nasty too. However, the hero is too bland and cardboard. You don't really feel anything about him, one way or another.