Framegrabs from the Season 16 episode, Treehouse of Horror XV. The Ned Zone: Ned gains the powers to see people's deaths. Four Beheadings and a Funeral: Lisa and Bart try to catch a Jack-the-Ripper-esque serial killer in Victorian-era London. In the Belly of the Boss: In a parody of Fantastic Voyage, Maggie is trapped inside Burns' body, and the other Simpsons must go inside to save her.