Terence Fisher’s Night of the Big Heat blends sci-fi menace with island-bound suspense, as a remote Scottish community is gripped by unbearable heat and mysterious deaths caused by alien invaders. With Christopher Lee and Peter Cushing leading the cast, this British cult classic mixes folk-horror atmosphere, claustrophobic setting, and vintage alien invasion thrills.

A scorching picture from 1967, Night of the Big Heat is a sweat-inducing shocker based on the 1957 novel from John Lymington. The remote island of Fara is experiencing a stifling heat wave in the middle of winter, causing life, as the locals know it, to come to a halt. Tensions rise as the heat increases plus a high-pitched tone of unknown origin is incinerating the villagers. 

Directed by Hammer favourite, Terence Fisher and starring Peter Cushing and Christopher Lee alongside chisel jawed Patrick Allen, Night of the Big Heat is sizzling British sci-fi at its most intense.

Från IMDB:
While mainland Britain shivers in deepest winter, the northern island of Fara bakes in the nineties.