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.

Sandro, a detective, finds his wife strangled. His girl-friend Tiffany, who works as photographer, makes a "Blow up" from a photo, what Sandro finds beside the victim. Sandro and Tiffany are looking for the woman on the photo, Laura. They finds her in a Night Club in Rome...

A recent widow has invited a group of family friends to her large and secluded country home. However, what the guests don't know is that the reason they've been assembled is that their host suspects one of them might be her husband's killer and she's intent on uncovering the identity of his murderer. As the guests begin to suspect each other, revealing long-kept and sinister secrets in the process, an unknown, black-gloved killer begins bumping them off in a variety of nasty ways.

An axe murderer terrorizes a small Northern California mountain community, while two young computer-obsessed adults attempt to solve the killings.

After a tied 1st place in a local stunt race, two drivers start a contest to decide who of them will own the prize, a dune buggy. But when a mobster destroys the car, they are determined to get it back.

Elvira is travelling through the French countryside with her friend Genevieve, searching for the lost tomb of a medieval murderess and possible vampire, Countess Wandessa. They find a likely site in the castle of Waldemar Daninsky, who invites the women to stay as long as they like. As Waldemar shows Elvira the tomb that supposedly houses the countess, she accidentally causes the vampire to come back to life, hungrier than ever. Daninsky has a hidden secret of his own, but will it be enough to save the two girls from becoming Wandessa's next victims?

People are dying mysteriously and gruesomely, and nobody has a clue what the cause is. Only health worker Mike Brady has a possible solution, but his theory of killer slugs is laughed at by the authorities. Only when the body count begins to rise and a slug expert from England begins snooping around does it begin to look like Mike had the right idea after all.

During a hold-up in the Wild West, Dakota kills a rich old Chinese man, Wang. Later, he is captured, sentenced, and is about to be hanged - and he never profitted from Wang's death, has he buried him with the photographs of his four widows, and a few worthless papers. Meanwhile, Ho comes to America in search of his uncle's fortune, and must get Dakota free, as he his the only man who can lead him to Wang's tomb. They open the tomb, retaking the pictures of Wang's widows. It happens he reads the papers and knows that Wang had one quarter of a map tattooed in each of his women's buttocks. Now, the difficult part will really start... Treasure hunt.

Following the mysterious decapitation of an insurance investigator, Police Inspector Peretti is put onto the case, but all the clues lead to an unsolved case of kidnapping and murder.