The science and the military plan to send astronaut Frank Saunders (Robert Reilly) into space to do some exploring; the catch is that Frank is actually a robot. However, Martian villains, led by icy Princess Marcuzan (Playboy Playmate Marilyn Hanold, "The Brain That Wouldn't Die") and her elfin toady Dr. Nadir (Lou Cutell, a.k.a. Amazing Larry from "Pee-wee's Big Adventure"), have arrived on Earth. The women of their planet have been decimated, and they need Earth women for breeding stock. But they didn't count on Frank, who's turned into a monster after receiving damage from a Martian weapon.

"Frankenstein Meets the Spacemonster" is fairly amusing 1960s cheese, and is reasonably entertaining for any schlock lover. It can be dull and talky at times, but it does have some fun moments. Of course, ANY movie that features the late, great James Karen (beloved for playing Frank in "The Return of the Living Dead") as a heroic, Vespa-riding scientist CANNOT be all bad. One of a few people from this production who managed to have a solid career after this, Karen is typically solid. Nancy Marshall is mostly just cute as his associate Karen Grant. Hanold and Cutell are entertaining baddies in the schlock movie tradition. Reilly is adequate as the "Frankenstein" of the title. Another great character actor, Bruce Glover ("Diamonds Are Forever"), has two of his earliest screen roles as he plays both one of the Martians and their pet "spacemonster" Mull (wearing a hilarious, fanged and shaggy costume).

A fair amount of stock footage mixes with new material in what is pretty enjoyable material, at least as far as this kind of movie goes. Ultra-cheap sets and special effects likewise make this endearing to the bad movie fanatic. The makeup on Frank (done by John Alese) isn't bad for a movie filmed over 53 years ago on a $60,000 budget.

Partly set in Puerto Rico, although largely filmed in Cocoa Beach, Florida.

Costume designer Anna Hill Johnstone went on to bigger and better things; her 1970s credits include "The Godfather", "Serpico", and "Dog Day Afternoon".

Five out of 10.