The Ruby of Carminel is the final book in the best-selling Mouse Kingdom trilogy. The island of Carminel lies in peril. The Black Widow Empress Ravanola has sent her wicked stoat warriors, led by Lord Malatesta, to steal the Great Ruby and destroy the peaceful Mouse Kingdom for ever. Only the brave Captain Roamer and his band of fear sea-mice stand ready. But can they rescue the ruby from the clutches of the evil spider, defeat Malatesta's mighty fleet at sea, and defend their home from the cruel invaders?