To save the Citadel, the Order must turn to unlikely allies.
With the impending war between the king and the riders about to ignite, Eldwin and Maren journey to the only other school left-Valgaard.
Will the traitorous riders leave their snowy mountain to aid them, or will the Order fall to the king's sword?
Fans of Sarah K.L. Wilson's Dragon School, Christopher Paolini's Eragon and Anne McCaffrey's Dragon Riders of Pern will feel right at home.
Tomb of Oaths is the fifteenth episode of the series Dragon Riders of Osnen.
Dragon Riders of Osnen series:
Book 1: Trial by Sorcery
Book 2: A Bond of Flame
Book 3: The Warrior's Call
Book 4: The Coin of Souls
Book 5: Wings of Terror
Book 6: Eyes of Stone
Book 7: Tooth and Claw
Book 8: A Servant of Souls
Book 9: Smoke and Shadow
Book 10: The Dark Rider
Book 11: The Song of Bones
Book 12: Sword and Crown
Book 13: Tides of Darkness
Book 14: Wrath and Ruin
Book 15: Tomb of Oaths
