Aliens from a dying world plot to conquer earth by preying 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.
Michael Rennie
as Dr. Odo Warnoff
Karin Dor
as Maleva Kerstein
Craig Hill
as Insp. Toberman
Patty Shepard
as Ilsa Sternberg
Ángel del Pozo
as Dr. Kerian
Paul Naschy
as Waldemar Daninsky
Manuel de Blas
as Count Janos de Mialhoff
Ferdinando Murolo
as Frankenstein Monster
Gene Reyes
as Tao-Tet (The Mummy)
Paul Cross
as Dr. Don Uno
Diana Sorel
as
Helga Geissler
as o. A.
