Book excerpt: In the action-packed Sif: Even Dragons Have Their Endings, Marvel's Tales of Asgard trilogy tells of the adventures of another of the realm's greatest warriors. When the nearby village of Flodbjerge is terrorized by a dragon, one of its citizens races to Asgard seeking the help of Thor. But with the God of Thunder incapacitated following a battle, it is Sif who must answer the call—much to the villager's dismay. Despite being one of Asgard's most skilled fighters, Sif is used to being doubted. She's also used to overcoming those doubts. There's a reason Sif is known as the Unstoppable. But both her reputation and her life are on the line as she faces the fearsome dragon, Oter. The face-off won't be straightforward either—the winged beast has a secret that Sif will have to unravel in order to defeat him before the village and its people go up in flames. Sif: Even Dragons Have Their Endings will be followed shortly by the final volume of the Tales of Asgard trilogy, Warriors Three: Godhood's End, also written by Marvel veteran and popular fantasy author Keith R.A. DeCandido.