1241. The Mongol hordes are coming. But something far older rides with them.
As Christendom trembles before the advancing armies of the East, an ancient darkness stirs once more across the Steppe. Eight hundred years after the Radix Obscurum last threatened the known world through Attila, it rises again-stronger, bloodier, and hidden within the wake of conquest.
Europe is divided. Its kingdoms are weak, its faith corrupted, and the sacred order once sworn to defend it has long since fallen into decay. Few remember the old enemy. Fewer still are prepared to face it.
But one boy is chosen.
An orphan named Isa, entrusted with the final secrets of a dying faith, is sent on a dangerous quest to confront the evil behind the coming storm. As he journeys across a world torn by war, betrayal, and fear, he will find loyal companions, forge powerful alliances, and uncover a destiny far greater than he ever imagined.
Set against the real terrors of the thirteenth century, The Slaying of the Bull is a sweeping tale of faith, sacrifice, and the battle for the soul of a continent.