An evil alien brain, bent on world domination, takes over the body of an atomic scientist, while a "good" alien brain inhabits the body of the scientist's dog and waits for an opportunity to defeat the evil brain.
John Agar
Steve March
Joyce Meadows
Sally Fallon
Robert Fuller
Dan Murphy
Thomas Browne Henry
John Fallon
Henry Travis
Colonel Frogley
E. Leslie Thomas
General Brown
Tim Graham
Sheriff Wiley Pane
Bill Giorgio
Russian
