When a book gets adapted for the big screen, there are always going to be some changes. There were plenty of things from Stephen King's It that didn't make it into the 2017 movie that's currently breaking box office records. It was bound to happen, when you consider the book was 1,138 pages long.
I've left a few big ones off this list, mostly because they're likely going to make it into the sequel, which is set to adapt the other half of the book. Yet there are some things that didn't make it to the film that are too difficult to film, or simply too creepy to include at all.1. Ben meets the mummy
The kids go to the movie theater regularly in the book (which is set in the 50s) usually to see monster movies - that It then imitates to scare the crap out of them.
The first time Ben meets Pennywise, he sees the clown stood on the frozen canal. He offers Ben a balloon, which floats towards him, distracting Ben as it is somehow going against the wind. When Ben looks back, Pennywise has almost reached him, now in the form of the infamous Mummy.2. The Werewolf on Neibolt Street
There are actually a few visits to the creepy house on Neibolt Street in the book, including a time where Bill and Richie are chased away from It in the form of a werewolf. When the Losers head back as a full group, It transforms into a werewolf again, savagely slashing Ben across his stomach when he attempts to save Bill.
This was inspired by I Was A Teenage Werewolf, which terrified the kids at the movie theatre. In the 2017 film, you can catch a quick glimpse as Pennywise's hand transforms into a long, hairy claw, attacking Ben in a similar way.3. The death of Eddie Corcoran
In the movie, Eddie is briefly mentioned as one of the missing children, but in the book he gets a full backstory - and a gruesome death. Eddie runs away from home after his abusive father accidentally kills his brother during a beating, only to meet It in the form of his dead little brother.
Eddie runs away, but eventually the apparition catches up, now in the form of the creature from the black lagoon. His last thoughts are "This isn't real, it can't hurt me", before the monster tears off his head.4. Patrick Hockstetter killing his infant brother
Patrick is likely the worst of the bullies in It. He's a psychopath who believes he is the only "real mortal", tries to feel up girls in his class, and shows them his collection of dead flies.
When he was five years old, Patrick became scared that his newborn brother would "replace him", so decided he had to get rid of him for good. One afternoon, he sneaked into his brother's room and smothered the baby while it slept. He then sat and watched television as he heard his mother scream at what she finds.5. Patrick's death
Patrick's story gets even darker. He uses a fridge dumped in the junkyard to store the corpses of animals he has killed, sometimes trapping them to see how long it takes until they starve. In the movie he is attacked by zombies in the sewers, but he has a far worse fate in the book.
He opens the fridge one day to find it is full of winged insects. They turn out to be flying leeches, and one by one they stick to his flesh, suck his blood, then burst. As if it couldn't get any worse, one lands on his eye, and after he screams another lands on his tongue (I'm getting queasy just writing this). He passes out and awakens in the sewers, as 'It' begins to feed on him.6. Frankenstein's Monster
In the book, the bullies eventually chase the kids into the sewers towards the end of the novel. Henry's sidekicks Victor and "Belch" are then attacked by It as Henry makes his escape. This time It appears to them as Frankenstein's monster. It decapitates Vic and quickly overpowers Belch, mutilating his face.7. Beverley's father
Beverly's father is pretty damn horrible in the movie as it is, but in the book, things are more extreme. It is heavily implied (and out-right stated by Pennywise at one point) that his abusive behaviour comes from an incestuous attraction to her.
On top of this, when he confronts her about hanging out with the boys, he insists she "take off her pants" so he can see if she was "intact". When she fights back, he chases her down the street, while their neighbours ignore her screams.8. The Bird
In Mike's first encounter with It, the monster takes on the form of a gigantic bird. While that might not sound too scary, it ends up being one of the more menacing forms It takes. Mike is chased into a fallen smokestack, as the bird, smelling of rotten decay, claws and snaps at him, before he eventually escapes.
The monster is inspired by the flying movie monster Rodan, as well as a horrific incident from Mike's childhood, wherein a crow attacked him in his crib, until his mother saved her terrified baby.9. Henry kills Mike's dog
Henry, in his anger towards Mike and his family, killed Mike's family dog. The bully secretively befriended the dog, feeding it treats until he would happily come over whenever he spotted him. Then, one day, he gave the dog some meat laced with insect poison. When the pain kicked in, he tied the dog to a post so it couldn't run home, then watched him slowly die.10. The infamous sewer scene
After their final confrontation with It, the children are unable to find their way out of the dark labyrinth of the town's sewers. Beverly realises she needs to bring unity back to the group for them to escape, so she offers to have sex with each of the boys. Wait - what?
Honestly, this really happens. All seven of them lose their virginity in this scene, which was ill-advised when it was written, and hasn't fared any better in the years since. Some defend it as symbolic of the group losing their innocence together, but it's still unnecessary, and pretty damn creepy to read a sex scene with 12-year-old children.
There are plenty of great scenes not included in the movie, but I imagine it was an easy choice to leave number 10 out of the movie. As for those other scenes, the director has said there may be some flashbacks in the sequel - hopefully some of these could actually make it to the big screen when that day comes around.
Stephen King's books can get pretty messed up, but now we may know the dark origins behind Stephen King's choice to write horror stories.