Mad Monster Party (1967)

Baron Boris von Frankenstein (Boris Karloff) achieves his ultimate ambition, the secret of total destruction. Having achieved this, he sends out bats with messages to summon all monsters to his island to inform them of this discovery, and to inform them as well that he is retiring as the head of the Worldwide Organization of Monsters.


His assistant, Francesca, comes to the lab and tells him that all invitations have been delivered, and wonders who is Felix Flanken. Frankenstein explains that Flanken (Allen Swift, doing a Jimmy Stewart impression), is his only living relative, a nephew, to whom he plans to give the leadership of the monster business. This displeases Francesca who covets the role for herself.


The monsters begin to arrive: they include Frankenstein's Monster and the creature's more intelligent mate (Phyllis Diller), Frankenstein's seductive laboratory assistant Francesca (Gale Garnett, playing the part of femme fatale), Count Dracula, the Werewolf, the Creature from the Black Lagoon, The Invisible Man, Quasimodo, Dr. Jekyll & Mr. Hyde, the Mummy, It (a knock-off of King Kong), and many more.


However when Felix proves to be an incompetent (and unsuitably kind-hearted) human, the monsters plot to eliminate him and gain control of Frankenstein's latest discovery....the secret of total destruction!