City of the Dead Book by James Ponti

City of the Dead by James Ponti is the fourth book in the City Spies series. In this installment, the team of young spies is sent to Cairo, Egypt, where they must prevent a catastrophic event linked to ancient secrets hidden beneath the city. As they investigate the mysteries of the pyramids and their surroundings, the group faces thrilling challenges, dangerous enemies, and complex puzzles. The story blends history, action, and espionage as the spies uncover a conspiracy that stretches back thousands of years.