Deathstalker meets twin princesses and goes on a quest for a magic diamond.
Along with the stilted Alfonso Corona's direction, Howard R. Cohen slack at best screenplay lacks logic. Silently produced by Roger Corman, Alejandro Rulfo Israel Torres medieval music borrows from The Raven, Battle Beyond the Stars and Brian Eno's prophecy theme from Dune. With arrow and sword action littered throughout the pacing is more plodding than its predecessors. That said, there's an impressive spectre and undead warriors thrown in for good measure. The exterior locations give it a little depth; but it's very set and stage like throughout.
The third of four Deathstalker movies, hero Deathstalker is replaced again now played by John Allen Nelson (best known for Killer Klowns from Outer Space). Nelson is more cocky than swashbuckling John Terlesky from II, and less Conan-like than Rick Hill in the original. Aarón Hernán hams it up as wizard Nicias, stunning Carla Sands can do no wrong in tone dual role. Terri Treas as Camisarde wrestles impressively with the laughable sparse script. Novel bald on top evil sorcerer Troxartes played by Thom Christopher (Hawk from Buck Rogers) along with the rest of the cast do their best with the clunky sword fights and dialogue.
Overall, a little tamer and less fun than the first two, that said worth watching for the leads.