Folks in a small Illinois town find a strange conical structure rising 50 feet out of the ground, after which people begin either disappearing or becoming possessed by insectoid parasites. Ed Nelson stars as the scientist investigating the thing, with a brief appearance by an unrecognizable Leonard Nimoy.
Notable primarily for the fact that Robert Heinlein's plagiarism suit over this movie stalled the production of a bigger-budget film of his novel The Puppet Masters.
Ed Nelson as Dr. Paul Kettering
Alan Jay Factor as Glenn Cameron
Cornelius Keefe as Senator Walter K. Powers
Joanna Lee as Alice Summers
Jody Fair as Elaine Cameron
David Hughes as Dr. Wyler
Robert Ball as Dan Walker
Phil Posner as Sheriff
Orville Sherman as Mayor Cameron
Leonard Nimoy as Professor Cole
I colorized this using AI software that doesn't always
get the colors right, but I think it looks fairly natural. Hopefully a
more professional job will be done someday.