Your father was Frankenstein. Your mother was lightning. Of course the problem with the Frankenstein sequels, of the Universal Studios kind, was that they had to follow the genre firework that was "Frankenstein (1931)" and the monolithic titan that followed that one in 1935, "The Bride of Frankenstein". These are tough acts to follow - still are actually! "Son of Frankenstein (1939)" managed very well, it had Basil Rathbone in it and Bela Lugosi giving great horror oomph as Ygor. Boris Karloff bowed out as the monster after that one, leaving an iconic legacy and an insistence that the…