*SIGNED BOOKPLATE*

Pick-your-own-path and puzzle-packed mystery collide in the fourth book in Lauren Magaziner’s hilarious and interactive middle grade series, as Las Pistas Detective Agency gets its first international case at an archaeological dig in Greece.

Detective Cat, Carlos, Eliza, and Frank are off to an archaeological dig in Greece to safeguard the legendary Necklace of Harmonica, rumored to keep the wearer young forever . . . for a price. Thieves are circling the necklace’s resting place, a tomb specifically designed to keep intruders out—but for how long?

Only six people on the dig know the location of the necklace, so this should be a piece of cake for Carlos. But the three successful mysteries the agency has solved lead to a new problem—Eliza wants to start taking her own way to solve the mysteries, which would leave Carlos with no help! With a skilled enemy at every turn, booby-trapped catacombs, and dozens of impossible choices, Carlos needs your sleuthing skills more than ever! Can you help Carlos and his friends find the fabled treasure? Or will it be case closed?