When Kate’s family invites the Sleepover Friends to camp-out on Spirit Lake, nothing goes the way Kate expects it to. There are mice in the cabin, spooky stories about the lake, and two dumb boys who love playing practical joke—on girls! Kate’s sure this will be their worst sleepover ever, but Patti, Lauren, and Stephanie are determined to make the best of it. After all, who wants to sit around roasting marshmallows when there are ghosts to be found?