And God Said to Cain (1970)

In the stark aftermath of the Civil War, former Confederate officer Gary Hamilton finds himself paying the ultimate price for a crime he didn't commit. Deceived by his treacherous lover and framed by his cunning ex-partner Acombar, he's thrown into a decade of harsh labor imprisonment. The stolen treasure? A precious cache of Confederate gold. The damning evidence? Hamilton's water-flask, conveniently left at the scene of the crime. However, truth knows its own path. On the fateful day the gold disappeared, Hamilton had a solid alibi - he was in the warm embrace of his lover, Maria. But the lure of wealth and Acombar's silver-tongued promises lead Maria to betray her lover, leaving Gary to languish behind bars while Acombar secures both the stolen gold and the girl. After a grueling decade in chains, Hamilton returns to the town that wronged him, his heart afire with vengeance. But Acombar, now a powerful man with wealth and influence, is guarded by an imposing battalion of loyal henchmen. Upon learning of Hamilton's return, Acombar prepares a deadly ambush, transforming the town into a lethal chessboard. But Hamilton isn't easily deterred. With the odds stacked against him, he turns to an ancient secret - a network of subterranean tunnels that weave beneath the town, remnants of an old Indian burial site. As dusk descends and a fierce windstorm whirls, Hamilton readies himself for the final confrontation, his quest for justice coming to a head in the heart of the storm.

And God Said to Cain is an action movie featuring Klaus Kinski.

And God Said to Cain is currently streaming for free (ad-supported) on Plex, Plex Player, Pluto TV and Tubi TV and it's also available on ARROW.

It is also possible to buy And God Said to Cain on Amazon Video, Apple TV, Google Play Movies, Microsoft Store and YouTube.