Doomwyte by Brian Jacques

When clues to a long-hidden treasure surface in the Abbey, a brave young resident and a band of loyal friends must race against ruthless invaders to protect their home; their quest takes them through ancient ruins and wild country, testing courage, cleverness, and fellowship as they outwit sinister foes, solve cryptic riddles, and fight to keep their community safe in a rollicking adventure of loyalty, humor, and daring deeds.

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