10 Horror Movies That Purposefully Mess With Your Head

This one takes a few viewings, but it's all there for close viewers to unpack.

The final film in Halloween director/ genre legend John Carpenter’s Apocalypse Trilogy, In The Mouth of Madness may not an official adaptation of HP Lovecraft's writing but its owes a debt to the infamous author's horror writing.

This twisted meta-horror satirises the literature industry whilst paying homage to the Cthulu creator in its internally looping narrative.

Sam Neill's cynical insurance inspector tells his story to a psychiatric doctor, explaining how he was sent to a spooky small town to track down a client, Sutter Kane. Only the viewer gradually realises, as too many trippy sequences and odd coincidences pile up, that Neill's hero is actually just one of Kane's creations, a fictional character living not in the "real world" but in the reality of one of Kane's novels.

In which Kane himself also appears, as himself.

Told you it all added up. Easy.