IT

"The terror, which would not end for another twenty-eight years -- if it ever did end -- began, so far as I know or can tell, with a boat made from a sheet of newspaper floating down a gutter swollen with rain."

IT is a 1986 horror novel by American author Stephen King. The story is about seven children being terrorized by a malevolent monster - known only as IT - that takes the form of their deepest fears but primarily appears in the form of a clown, calling itself "Pennywise the Dancing Clown." The novel features a nonlinear narrative which alternates between two different time periods and shifts among the different perspectives and stories of its seven protagonists. It deals with themes which would eventually become King staples: the power of memory, childhood trauma and the ugliness lurking behind a small-town façade.

One of the most popular Stephen King novels and widely regarded as a horror classic, It is also one of the darkest and most frightening, its subject matter being a child-killing supernatural monster with Adults Are Useless in effect for at least half the story. Along with The Stand it is one of the stories that cemented King's reputation as the premier modern horror writer.

In 1990, the novel was loosely adapted into a television movie featuring John Ritter as Ben Hanscom, Harry Anderson as Richie Tozier, Tim Reid as Mike Hanlon, Annette O'Toole as Beverly Marsh, Richard Thomas as Bill Denbrough and Tim Curry as Pennywise in a career-defining role.

On March 12th 2009, Warner Bros. announced that the production of a remake of IT had started. Dan Lin, Roy Lee and Doug Davison are set to produce.

Not to be confused with the 1927 silent film of the same name, which introduced the phrase "It Girl" to the world. Or the Big Bad of A Wrinkle in Time. Or the guys down in the sub-basement who run the TV Tropes Server. We hope.

Tropes:

 * Abusive Parents: A short list: Beverly's father, Henry's father, Tom Rogan's mother, Eddie Corcoran's stepfather and Eddie Kaspbrak's mother (even if she didn't mean it that way).
 * Adults Are Useless / Invisible to Adults: Justified, and averted when necessary.
 * Anatomically Impossible Sex:
 * Asshole Victim:
 * Axe Crazy: Claude Heroux.
 * Batman Gambit: It is vaguely implied that
 * Big Good: The Turtle in the book.
 * Bittersweet Ending:.
 * Bloodless Carnage mixed with Getting Crap Past the Radar: Since the movie version was made for television, most of the actual deaths weren't shown in very graphic detail. Most instances in which the filmmakers were allowed to include blood took place during It's illusions, in which it bursts from balloons, erupts from a sink, and spills from containers, but never leaves a human body or is referred to as such. The idea that it even is blood is up to audience assumption.
 * Brown Note:.
 * The Cameo:  shows up to give Henry Bowers a lift.
 * Dick Halloran of The Shining fame also shows up in Will Hanlon's story of how the future cook of the Overlook hotel saved him from the Black Spot fire.
 * The 1930s flashback includes an appearance by Walter Pickman, from the HP Lovecraft story Pickman's Model.
 * Pennywise appears in other Stephen King novels featuring Derry, and is even mentioned in the Dark Tower saga.
 * Camp Gay: Adrian Mellon, IT's first victim in 1985.
 * Catch Phrase:
 * Beep beep, Richie
 * I worry about you Bevvy, sometimes I worry a lot.
 * B-B-B-(*beet*)-Billy Boy.
 * I'll kill you all.
 * Dontcha wanna balloon?
 * We/they all float (down here).
 * When you're down here (with us/me), YOU'LL FLOAT TOO!
 * Circle of Friendship: The main characters do this to help a hospitalized main character defend himself from a Brainwashed and Crazy nurse.
 * Clap Your Hands If You Believe:
 * Did Not Do the Research: Bill's actress wife Audra is in England making a film produced by an Englishman "who had once bowled a century at cricket," which anyone who knows anything about cricket will tell you is impossible. (A rough US equivalent would be "pitching a home run".)
 * Did You Just Punch Out Cthulhu
 * Door Stopper: The book reportedly killed a chihuahua. By falling on it.
 * Dream Sequence
 * Eldritch Abomination: Makes Cthulhu look like a puppy the way King describes IT's true form. Not to mention all the shape shifting.
 * And that's just what human beings are capable of comprehending. In the mental wars between the Losers and It, it's suggested It's true form exists beyond the boundaries of reality as all-consuming and destroying light.
 * The End or Is It: From the first line, it's uncertain as to whether "the terror" ever really did end.
 * Final Battle: Foreshadowed right from the first page.
 * Gondor Calls for Aid: In the movie when IT returns and the now adult Mike calls the rest of his lucky 7.
 * Go Mad From the Revelation: A common reaction upon seeing It's true form.
 * Harsher in Hindsight: An in universe example:
 * I'm Not Afraid of You
 * In Case You Forgot Who Wrote It: A surprisingly rare example for a Stephen King adaptation, probably because the title on its own is extremely generic.
 * Let's Split Up Gang: Subverted. When Bill and Richie are exploring the basement of the house on Niebolt Street, Bill starts to suggest this. Richie cuts him off with a resounding "Fuck that!"
 * Limited Special Collectors Ultimate Edition: Cemetery Dance released one for the novel's 25th anniversary.
 * Mind Rape: Pennywise is very fond of messing with the Losers Club's heads.
 * Monster Clown: Pennywise, a literal monster in the form of a clown.
 * Officer O Hara: Mr. Nell, who provides the basis for Richie's "Irish Cop" Voice.
 * Parental Obliviousness
 * Placebo Effect: Eddie's asthma is revealed to be psychosomatic, and his medication is a placebo.
 * Politically Incorrect Villain: Pennywise himself, along with Henry and Butch Bowers.
 * The Power of Friendship: One of the major themes in the book is of childhood friends who have long since gone their separate ways but must now come together to defeat the Big Bad.
 * Red Oni Blue Oni:
 * The Reveal: The revelation, in the book's later chapters, that IT is
 * Ripped From the Headlines: Adrian Mellon's murder was modelled after the murder of Charlie Howard, another Camp Gay man who was thrown off a bridge in Maine; they even landed in the same river. Howard simply drowned, though; there was no demonic clown involved. Probably. Also The Brady Gang (changed to Bradley in the text), gunned down by FBI agents in Bangor in 1937.
 * Sacrificial Lamb: George Denbrough and Adrian Mellon.
 * Say My Name: "BEEEEEEEEEEV!"
 * Somebody Elses Problem: Implied to be the doing of IT, but it can still get rather disturbing at times.
 * Spooky Photographs: That start moving and threatening you.
 * Spooky Silent Library: At least when Mike's working there after hours.
 * Survival Mantra: "He thrusts his fists against the posts and still insists he sees the ghosts".
 * Take That: In the novel, when Bill (who, as an adult becomes a very sucessful horror writer) recalls his college years, and how he crashed heads with his writing teacher, who believed that a good work of fiction also had to make a political statement, and Bill's statement that one should write good stories that entertain, since "politics change over time but stories remain".
 * There Are No Therapists
 * There Is No Kill Like Overkill: The execution of the Bradley gang.
 * Town With a Dark Secret: More like a dark secret shaped like a town.
 * Turtle Power: Hinted at throughout the book.
 * Voluntary Shapeshifting: IT usually takes the form of Pennywise the Clown, but often assumes the shape of whatever the victim is most afraid of. Pennywise is something of a neutral form for either dealing with multiple victims or the same victim twice, or just getting around.
 * Where Everybody Knows Your Flame: Parodied - it takes the guy running The Falcon years to realise that his place has become the town's gay bar, but everyone else is convinced there must be orgies going on nightly.
 * Worst News Judgment Ever: Mike discovers that despite the children's killings and incidents in which many people die, those news are rarely spoken outside the town of Derry; its like something doesn't want those to be known outside.
 * Would Hurt a Child: Not just hurt, psychologically torment and eat them too.
 * Your Mind Makes It Real
 * Your Mind Makes It Real

- "You don't have to look back to see those children; part of your mind will see them forever, live with them forever, love with them forever. They are not necessarily the best part of you, but they were once the repository of all you could become."