Frankenstein Meets the Space Monster
 Frankenstein Meets the Space Monster (1965) is a science fiction cult film directed by Robert Gaffney and starring Marilyn Hanold James Karen and Lou Cutell. It was filmed in Florida and Puerto Rico in 1964The film was released in the United Kingdom as Duel of the Space Monsters. It is also known as Frankenstein Meets the Space Men Mars Attacks Puerto Rico Mars Invades Puerto Rico and Operation San Juan.