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.
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.
Dan Beattie gives up his lawman job to move further west and rejoin his old war buddy Curt Warren in the town of Sundown. At first mistaken for a railroad agent by Beau Santee, a Sundown businessman who wants to keep the railroad away from his town, Dan is nearly killed by Santee’s henchman, Mark Faber. Dan discovers that his old pal Curt works for Santee. Even after learning Dan’s true identity, Santee considers him trouble and plots to get rid of him. With the help of Curt’s son Stony, Dan tries to get Curt to take a stand on the right side of the law.
A police lieutenant fights to prove a boy’s innocence after he’s accused of murder. The fourth of five Ben Schwab productions that starred Bill Elliott as a detective lieutenant in the L.A. Sheriff’s department.