**_Two cavemen lurk in the caves near Frankenstein’s castle_** When this was shot there were already six Hammer Frankenstein films with only one more in the series to go. The best comparison would be “Lady Frankenstein,” which was shot 1½ years earlier. Like that one, it’s an Italian production, but with an international cast. Paul Naschy’s “Count Dracula’s Great Love” is another good parallel (despite being a vampire flick). While critics like to mock it as “the worst Frankenstein movie ever made,” there’s only one real ‘cheesy’ element, and that’s the curious inclusion of the caveman that…