Jay and Lila Cooper have been on adventures with their archaeologist father before, but nothing like this! As they make their way through the dark and mysterious cavern, they can't help thinking about the other exploration parties that tried to open the Door. All fled in panic or died terrible deaths! What really lies behind the Door? Incredible riches from a lost kingdom... or some ancient evil? They must find the key and discover themselves the truth about the Nepurian legends. Jay and Lila know one thing for certain--they've been protected in many dangerous circumstances before. But will they be able to overcome whatever force lurks behind the Door in the Dragon's Throat?

A rip-roaring yarn filled with danger and intrigue, ending with a titanic clash between the forces of good and evil. By the bestselling author of This Present Darkness and Piercing the Darkness.