
An architect is convinced there are aliens in the world.

Vincent's investigation of the deaths of two astronauts in an eerie red fog leads him to suspect human culprits.

Extraterrestrials discourage Vincent from publicizing proof of their presence by capturing his brother (Linden Chiles).

A vicious dog convinces Vincent aliens are responsible for a friend's (Charles Aidman) recent institutionalization for insanity.

A nurse (Barbara Barrie) tends to a mortally injured alien (Richard Anderson) who begins a horrifying transformation.