Fudge (Top Men) #5: Domedecahedron

Pursued by police in Alexandria, the Top Men escape into underground Roman chambers, only to face off with armed tomb robbers. At the harbor, the team meets with a Greek named Athanasios who provides them with scuba gear. After a bloody shark encounter, the divers reach a tunnel leading to a water-free room where a certain sarcophagus lies waiting to reveal its secrets.