The Earth is invaded by alien parasites—AKA 'slugs'—that ride on people's backs and control their minds.
Phantom from Space
Evilution
Slaughterhouse-Five
Mars Needs Women
The Narrows
Ghost Story
The Visitation
The Car
Tony Rome
Harper
Quatermass 2
Dragonwyck
Point Blank
Coogan's Bluff
Messenger of Death
Project Hail Mary
The Shepherd: Border Patrol
Cirque du Freak: The Vampire's Assistant
Gone with the Woman
House of Usher
