Then it really is Old Scratch knocking at the door.

Something of the forgotten John Carpenter movie, Prince of Darkness shows both the good and bad side of the supremely talented director.

The story is a beaut, a bit skew-whiff, but unmistakably Carpenter territory as Satan exists in some sort of parallel universe. How he manifests himself is narratively a bit tricky, but still it makes for good horror, especially as the old religious angle finds Carpenter - in the guise of Donald Pleasence - chortling away to himself in a way that Old Nick has been prone to do.

Cue bugs, green goo, zo... read the rest.