In this sixth Adventure Time original graphic novel, BMO and Jake are getting ready for the biggest costume party ever they ve received invites from everyone! As they party-hop, they realize that each party has one thing in common: a prankster. Detective BMO is on the case with the help of Jake, his sidekick, to figure out what s going on. Join them as they travel all across Ooo to find who the culprit is, while still enjoying some fun times with friends.
