A rescue team is sent to Mars to bring back an astronaut who claims that a Martian monster killed his team. As they return to Earth, they sense the presence of the creature in the spaceship.
The true value of an estate brings out the worst in the deceased's doctor (Christopher Lee), lawyer, sister (Joan Collins) and rightful heir (Robert Hardy).
Emmanuel, a scientist, discovers skeletal remains of a humanoid and brings it to his home. However, with its ability to grow new flesh when moistened, the skeleton wreaks havoc in his house.
An Austrian general agrees to care for Marcilla, a countess's daughter, while her mother is away. However, Marcilla turns out to be a seductive and dangerous vampire.