How A Sci-Fi Master’s Hard-R Horror Movie Was Sabotaged By Critics

John Carpenter is a legendary horror director thanks to films like Halloween and The Thing , but he is such a prolific creator that it is easy to overlook some of his best movies. For example, one of his best movies doesn't feature a mask-wearing psycho or an alien menace from outer space; rather, it involves one man's descent into his own personalized corner of hell. And if you're ready to experience Carpenter's most unsettling horror film, it's time to stream In the Mouth of Madness for free on Tubi.

The premise of In the Mouth of Madness is that a publisher hires an insurance investigator to track down a famous horror author who has suddenly gone missing. It sounds like a straightforward gig, but it doesn't take long for elements of the author's fiction to start blending with reality. And even if he can find the lost author, there's no guarantee that he or anyone else will be able to put everything back into Pandora's Box before everything and everyone is in the thrall of unspeakable evil.

You can probably tell that In the Mouth of Madness takes major inspiration from HP Lovecraft, the influential horror author whose works have influenced films like Re-Animator and even TV shows such as True Detective . But John Carpenter's approach is notably different: he eschews the over-the-top gore and grossouts of Re-Animator , but he also avoids the ponderous and self-serious ruminations of True Detective . Instead, he lets In the Mouth of Madness exist in its own liminal space, like a disturbing dream that's always teetering on the edge of becoming a full-blown nightmare. 

In the Mouth of Madness has a tight-but-great cast, including brooding Jürgen Prochnow (best known for his roles in Das Boot and David Lynch's Dune ). It also stars two of the best character actors ever to grace Hollywood: David Warner (best known for Tron and Star Trek VI: The Undiscovered Country ) and John Glover (best known for Scrooged and Gremlins 2: The New Batch ). Perhaps most surprisingly, it stars Charlton Heston, the Planet of the Apes star and a bona fide Hollywood legend!

Mostly, though, In the Mouth of Madness is an acting tour de force for lead actor Sam Neill . While he might be mostly known for the hit action blockbuster Jurassic Park , Neill is one of horror's reliable performers, giving it his all in movies like Event Horizon and Possession . And he does an equally fantastic job with In the Mouth of Madness , playing a relatively normal character who doesn't realize until it's too late that he may be going down a road (both spiritually and psychologically) from which he may never return.

If you're a fan of Carpenter, it's a safe bet that you'll enjoy In the Mouth of Madness : it has all of the director's stylistic flourishes, and (as in Halloween ) the director personally scored the film. But for even the most devoted fans of this director, this movie is a revelation of sublime, creeping terror and skin-crawling scares. Trust me when I say that Carpenter will scare you like never before with a movie unlike any he has createdbefore or since.

It turns out that John Carpenter's creepy film managed to unsettle critics as well, as evidenced by In the Mouth of Madness having a Rotten Tomatoes score of 59 percent. Interestingly, the primary complaint from critics is that the movie doesn't fully deliver on its cool premise, but that's a very hollow criticism: Carpenter does more than most directors ever could with this film's cool ideas, and critics wanting even more is, frankly, a sign of how good the movie really is. Fans generally agreed, and In the Mouth of Madness has a higher and far fresher audience score of 73 percent.

Will you enjoy stepping In the Mouth of Madness , or is this one surreal tale that you'd rather mail off to your favorite horror author? You'll never know unless you stream it for free on Tubi. Afterward, you may never look at the minds behind your favorite scary stories the same way, ever again!

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