Castle by the Sea brings the World Weaver Trilogy to a close with Larkin, an apprentice world weaver, facing his most difficult test in the series of three tests he must pass in order to enter the brotherhood of master world weavers. He is accompanied by Peggy, his best friend and confidant. Larkin has been instructed by his father to use his remarkable power against the evil wizard Zandar, a reincarnation of Larkin