Jerry Warren's Frankenstein

 

 (wikipedia)

FRANKENSTEIN ISLAND-1981-4 balloonists, Curtis Ryand (Tain Bodkin), Dr. Paul Hadley (Robert Clarke), Mark Eden (Robert Christopher; a co-producer) and Dino (Patrick O'Neil) crash on an island. After going through a cave (where a familiar face watches them) they find a woman bound and then meet a whole tribe of scantily clad "native" women who take the men back to their cave. While the men have dinner, the women do a dance. The next day we learn the bound woman was being initiated into the group. A strange force surrounds their camp and the women seem "deep into witchcraft". Then two loonies Jocko (Steve Brodie) and Angus (Richard Banks) show up. They lead the small group to a laboratory complex where they find Jason (Cameron Mitchell), a sea captain held prisoner for 17 years. (his short soliloquy is pretty funny). After he's sedated the group meet Shelia Frankenstein-Van Helsing (Katherine Victor), the great granddaughter of the infamous doctor who created the island and despite being dead still controls it. Her husband Dr. Von Helsing, is a bed ridden old man who has to be jolted into consciousness to babble about the Frankenstein monster being chained to a reef. There are also a bunch of zombie like servants in sunglasses and wool hats. The girls dance some more. The real Dr. Frankenstein (John Carradine) shows up occasionally as a hologram to say things like "The power! The power!". Hadley (under some drug) winds up helping Shelia experiment on the girls (who are the offspring of aliens) to help her senile husband. When the rest of the guys revolt Shelia calls on great granddad who summons his monster (obviously trying to imitate Bela in FRANKENSTEIN MEETS THE WOLFMAN). 

The ridiculous final fight is very reminiscent of the one in "THE WILD WORLD OF BATWOMAN", but it's easy to see why. Both were directed by the usually incompetent Jerry Warren. In fact FRANKENSTEIN ISLAND was Warren's first film in 15 years after making “Batwoman” in 1966! (with Victor and Brodie). In the end the men escape and tell a colonel (Andrew Duggan) about the island but when they return everything has vanished (??). 

It seems based on another Jerry Warren movie TEENAGE ZOMBIES. This was the third Jerry Warren movie Robert Clarke (THE HIDEOUS SUN DEMON) starred in. Warren threatened a sequel but it was never made. He died 1988.

Thanks for reading!