The Wandering Fire: Book Two of the The Fionavar Tapestry

As the evil of Rakoth Maugrim threatens the very existence of Fionavar, the five from our own world must cross over once again to play out their given roles: Kimberly to summon the dead from their rest and the undead to their doom; Dave to take his place in battle among the Dalrei of the Plain; Paul, Lord of the Summer Tree, once more to weave his own bright thread through the tapestry; Jennifer to become the agent of a timeless destiny; and Kevin to discover finally the part he is to play in the struggle to save the Weaver's worlds from the Unraveller.
Guy Gavriel Kay's classic epic fantasy plays out on a truly grand scale, and has already been delighting fans of imaginative fiction for twenty years.