Book II, Ghosts in the Trees, Peri and the Cold Watchers is the continuation of Book I, Ghosts in the Trees, Peri and the Fairy War. A five book series, Book II falls into a greater peril than the Fairy War. So Peri, Mad and Gipi have escaped Rile. They are presently safe but don't know what is coming. Ghim still has ravines to cross before his collision with Peri. First, he needs to survive the Wanderer (with Zana's help), who seems to be more interested in Feldor than the Lost Princess. Where Ghim wrestles with frustration, Peri wrestles with staying alive.