After a vampire leaves his native Balkans, he murders a Czech artist, assumes his identity, and moves in with the dead man's American cousins.

A small town doctor mistakenly ingests an experimental drug made from the blood of vampire bats which transforms the kindly medic into a bloodthirsty monster.

Rock-n-roll promoter Alan Freed holds a talent search to develop a new rock star, then must find the elusive, mystery contestant (Jimmy Clanton) who doesn't know he has won.

A young man stalks his mother's killers.

Carol Dahlmann enlists the Hollister brothers to help locate her missing husband. The husband was tracking a fallen satellite through the jungle. While tracking him down, the trio discover an unusually strong acid killing animals and people.