Food Network, HGTV and Travel Channel's biggest stars team up for the ultimate Halloween adventure, right in the heart of Sin City! Drew Scott and Tia Mowry face off against Jonathan Scott and Duff Goldman to create two life-sized haunted houses right on the Las Vegas strip, full of over-the-top special effects, tasty treats and freaky concoctions. Travel Channel's Adam Richman joins to help out both teams, and then the public votes on their favorite, most-frightful haunted house, with the best team winning money for the charity of their choice.