Mariel of Redwall

Mariel of Redwall is the fourth book in the Redwall series by Brian Jacques.

A young mousemaid finds herself at the shores of Mossflower, remembering nothing of her life. She takes refuge in Redwall Abbey, where she learns who she was and what happened. Mariel decides to take revenge on Gabool the Wild, a searat captain who lives on an isle in the ocean.