“If this heat goes on like this, it could very well drive us all insane.”

Remember those conversations we used to have in the playground during the atom bomb eighties, when everyone seriously expected that we'd all end our days with just four minutes to do whatever we could? Usually the conversations went along the lines of:

"I'd steal a Porsche..." (none of us could drive, or knew how to hotwire a car. Also, this was rural South Cheshire. We might have been able to find a tractor within four minutes, or if we were lucky, a Ford Capri)

"Well, I'd get pissed..." (actually, probably the most realistic claim, as half a can of Top Deck shandy would have probably done the trick)

In the 60s, there were few thoughts of car stealing when it came to the end of the world. But getting pissed did feature quite heavily. In films like The Deadly Bees, The Earth Dies Screaming and, of course, this one, huge natural disasters mean only one thing - a trip to the local pub.

The temperature on a small island off the British coast keeps rising - despite the fact that it's winter and freezing on the mainland. But is anyone worried? Nah. They're just a bit hot and sweaty, that's all. 

Of course, the mainland knows all about the freak weather conditions, but have they sent anyone to investigate? Not a bit of it. There's just Christopher Lee, wandering around and bothering the sheep, by all accounts. Strange man.

He's the only one who is bothered about the temperature, yet everyone thinks he's the odd one. There's a number of deaths, the temperature keeps on rising, and Peter Cushing refuses to take his jacket off. Lee deduces that there's extra terrestrial powers at work, most of the cast get fried, and then it rains and the "aliens" all die.

Most of the film is more a kind of domestic drama than sci-fi invasion extravaganza, with the bloke out of the Barratt Homes ads trying his best to ignore the sultry shenanigans of his sweaty secretary and the temperature in the pub getting so hot that all the bottles of Pilsner explode.