*SIGNED BOOKPLATE

Pick-your-own-path and puzzle-packed mystery collide in the third book in Lauren Magaziners hilarious and interactive middle grade series in which the reader must help Carlos and his friends hunt ghosts at a haunted hotel.

Carlos Serrano is now officially an apprentice detective at Las Pistas Detective Agency. He finally earned his moms trust, but his next case will be his most difficult one yet. Guests at a creepy mountain hotel are complaining of weird disturbances, threatening messages, and hair-raising howls! Carlos, along with his best friend, Eliza, and her wacky little brother, Frank, arrive on the scene to investigate a . . . ghost? What secrets is this haunted hotel hiding? With tricky puzzles, ghoulish secrets, ectoplasmic enemies, and dozens of impossible choices, these junior detectives need your sleuthing skills!

Can you help Carlos and his friends unravel the mystery before its too late? Or will it be case closed?