Scare yourself silly for half-price at these two great NYC haunted houses and other fright night experiences. For adults only, please. Blood Manor has been New York City’s favorite haunted attraction since 2005. New this year is a 3D labyrinth, whose inhabitants are hell-bent on making every visitor a contributor to their blood bank. Plus, dozens of cutting-edge animatronics, 18 fright-filled environments, including the Fog of Death, Vestibule of the Undead, the Rue Morgue, Steampunk, Frozen Alive, the Banquet of Torture and Laser Spectacular. Click here to get tickets for up to half off the regular $30-$45 price, through November 3rd, in Soho. Killers: A Nightmare Haunted House is a gruesome tribute to our fascination with serial killers, both real and fictional. Inside this terrifying labyrinth, you will encounter a variety of psychopaths engaging in their murderous pursuits, including real-life horrors like Ted Bundy, Albert Fish and the Zodiac killer. Click here for tickets up to half off the regular $30-$50 price. On the Lower East Side, also through Sunday, November 3.