The Ring of the Nibelung: Gotterdammerung (Book Four) #1

P. Craig Russell's stunning saga of the Norse gods and heroes nears its conclusion with Gotterdammerung: The Twilight of the Gods, the final arc in The Ring of the Nibelung series. The unique cast of characters -- gods, heroes, and monsters -- are brought together by their various schemes and betrayals, leading to the explosive climax. Siegfried gives his Ring of the Nibelung to his beloved Valkyrie and goes out into the world, setting events in motion to bring the curtain down on the heavens and earth.

The Ring of the Nibelung Book Four: Gotterdammerung - The Twilight of the Gods