Host John Henson leads the bakers into the dark night of the finale! First stop at the Museum of Unnatural History is the Ancient Egypt Collection in the Hall of Humanity, featuring a large sarcophagus. The bakers are inspired to create scary sarcophagus desserts centered around an ingredient they love so much they'd take it into the afterlife. Then, it's time to bake for all the bones as the final bakers make ossuary cakes, based on a room in the Hall of Great Wonders covered entirely in human bones. Judges Stephanie Boswell, Aarti Sequeira, and Zac Young select the winner of the final challenge to receive $25,000 and the coveted title of Halloween Baking Champion!