A hilariously spooky picture book packed with ghosts, bums, and plenty of laughs! Ghost's bum has gone missing—he's lost his "Boo!" and his spooky spirit! He’s no longer leaping from shadows like before. Oh no! Ghost’s bum is acting up, and it seems like he really needs a new one. Luckily, one clever boy knows exactly how to fix things. Will he help Ghost in time to make this Halloween the most fun yet?