My review was written in May 1989 after watching the film on Vestron video cassette.
Third edition in Concorde's "Deathstalker" series is a bland, made-in-Mexico affair constituting little more than a title and pretty package for undiscriminating video retailers.
Soap opera thesp John Allen Nelson is miscast in title role, smirking his way through a non-adventure in a mythical medieval land searching for the secret treasure city of Erendor. He accompanies Princess Carissa (Carla Herd) and her big diamond in quest for a matching stone. She's killed and he finds her twin Princess Elezena (also Herd) and eventually to matching gems, for chintzy visual effects when the powerful diamonds are joined.
Herd is upstaged by a pretty Amazonian warrior played by Claudia Inchaurregui, as well as Concorde regular Terri Treas as a villainess with arch dialog readings. Nelson's all-American approach is way out of place and supporting cast is weak. Previous pics in this series had some campy material but this one's a stiff.