Sir William the Marshal, star in his own time, has promised to be on crusade, a vow made to his Small King as he place dying. But when the Oliphant, legendary war horn of Roland, is definitely taken from the lethal Assassins, he’s billed with returning the relic in order to stop the very thing he’d vowed to attempt – a crusade; this one engineered with the thieves. With his little band of trusted companions – Sir Baldwin, his tourney compatriot; Eustace, his squire; and Henrik, the large Norseman – William pieces out to get back the relic. But treachery abounds, and when William manages to lose two of his companions, he discovers an unlikely ally – Da’ud, an Assassin himself, bent on taking the Oliphant from your heretic faction that has stolen it. The three fight their way across land, sea, and desert, only to end up facing an army…and the Oliphant within their grasp.