Fiend Without a Face

Close by a US Army base in a remote corner of Canada, a trail of corpses leads Thompson to uncover a hideous experiment gone wrong. A familiar plot right down to the atomic mutation premise, but the special effects - killer brains that propel themselves through the air with a whip of the spinal cord and latch onto the backs of their victims' necks - are among the most memorable in the eco-horror genre. Crabtree (a former cinematographer who graduated to Gainsborough melodramas and also made the bizarre Horrors of the Black Museum) is one of the unsung auteurs of the pre-Outer Limits era. This may be his finest hour and a bit.