It's that time of year again, when police officers with the 78th Precinct in Brooklyn—in an effort to engage with the community—trade their blue uniforms for ghastly costumes, and invite the whole neighborhood into the aggressively terrifying basement of their Prospect Heights station house. (Click through the above photos from last year's event.)

Now in its third year, the annual NYPD haunted house has plenty of new nightmare fuel to work with, thanks to the arrival of an especially grotesque Pennywise—a real bar-setter in what's sure to be a weekend full of dancing clowns.

Pennywise heard about our upcoming haunted house and decided to make the Chiefs office into his “Fun Zone.”

Trick or Treat! 🎃 pic.twitter.com/WtMRti7aCT — NYPDBrooklynNorth (@NYPDBklynNorth) October 24, 2017

Starting today Come through our haunted house free to members of the community pic.twitter.com/iXUIujg9TU — NYPD 78th Precinct (@NYPD78Pct) October 25, 2017

When we took a tour of the basement in 2015, Captain Frank DiGiacomo, the precinct's commanding officer, told us: "The reason we're doing it is 90 percent of people come into a police precinct for bad things, they don't come in for good things. So we want to get the kids and teenagers—come meet the police, come into the station house for something good like a haunted house and meet the police officers...who've given their own time to scare them and introduce and meet them."

Previous iterations have involved masked cops jumping out of corners, severed limbs, ghoulish dolls, a strikingly realistic electric chair gag, and a whole lot of fake blood. But DiGiacomo, a horror buff, has said that he's always looking to find new additions for the grisly basement.

Open from October 25th through October 30th, 3 p.m. to 9 p.m. // 78th NYPD Precinct stationhouse, 65 6th Avenue, Brooklyn // Free

Below, check out our video tour of the haunted house from 2015: