Assignment Terror

An alien scientist and his team are sent to earth from their dying planet to exterminate the human population by unleashing monsters like vampires, werewolves, and mummies in order to inherit the earth.
Aliens from a dying world plot to conquer earth by praying on man's superstitions. Bringing two dead scientists back to life, they use their knowledge to re-animate various earth monsters, including the werewolf, Frankenstein's monster, the mummy Tao-Tet, and the vampire Count de Meirhoff.