Invasion from Inner Earth (also known as Hell Fire and They) is an apocalyptic vision directed by Bill Rebane. It stars Paul Bentzen and Debbi Pick. It is filmed in the style of Alfred Hitchcock. It follows a group of pilots in the Canadian wilderness begin to hear strange reports over their radios about planes crashing, cars stalling, and a deadly plague which has gripped the planet.
As the plot continues, it’s clear that Earth is in the midst of an invasion. The pilots barricade themselves in a cabin in the woods and wait for impending doom.