The Brain Eaters

A huge, alien structure resembling an inverted cone, appears in the woods outside a small rural town. Sent from Washington to investigate the origin of the mysterious object, a team of investigators discovers that intelligent parasites from inside the "cone" can attach themselves to humans' nervous systems and control their minds, taking control of the authorities and workers, making communication with the outside world impossible, and leaving the responsibility of stopping the invasion up to seven people who have thus far been able to avoid possession by these creatures from parts unknown.

• 
  Ed Nelson

  Dr. Paul Kettering
• 
  Cornelius Keefe

  Senator Walter K. Powers
• 
  Jody Fair

  Elaine Cameron
• 
  Phil Posner

  Sheriff
• 
  Orville Sherman

  Mayor Cameron
• 
  Hampton Fancher

  Zombie (uncredited)
• 
  Leonard Nimoy

  Professor Cole