Dragons of Deceit (Advanced Dungeons & Dragons/Dragonlance Module DL9)

Beckoned by a mysterious visitor, the heroes embark on a mission into the very heart of the Dragon Highlords' realm. The ominous city of Sanction, crouched in a narrow valley between the mighty volcanoes known as the Lords of Doom, holds the secret of the good dragons' oath. Unimaginable terrors await the party as they search the city, seeking a key to the fiery lair of the Dragon Highlord and his evil minions. Can the heroes solve the mystery of the dragons' oath? Will they penetrate the deception of the Dark Queen in time to bring salvation to Krynn? Or will their valiant efforts be in vain?