Milo Murphy's Halloween Scream-a-Torium!.Milo builds his own haunted house out of a decommissioned truck and invites his friends to the fright fest, but Zack is not too amused because he has grown out of being scared on Halloween. Thanks to Murphy's Law and the truck going on a wild ride throughout town however, Zack slowly changes his mind. Meanwhile, Dakota and Cavendish take part in the Halloween fun while also investigating the mystery of the last Halloween, which almost happens because of Dakota and a wayward time grenade.