Thomas of Hookton, an English archer, must navigate the chaos of the Hundred Years War to recover a legendary relic while his army faces annihilation. Tasked with locating the lost sword of St. Peter, Thomas operates within a landscape defined by scorched earth, shifting political allegiances, and the brutal realities of medieval warfare. The narrative follows his perspective as he balances his personal quest against the strategic maneuvers of the Black Prince. The story unfolds through a third-person limited lens, emphasizing the tactical constraints of 14th-century combat and the high stakes of the impending Battle of Poitiers.

This novel is widely regarded as a quintessential entry in the author's extensive body of historical military fiction. Readers often highlight the meticulous research regarding 14th-century weaponry and the tactical clarity of the battle sequences. The work is frequently praised for its ability to ground grand historical events in the immediate, physical experience of a single soldier. Critics and fans alike note that the narrative maintains a consistent momentum, effectively balancing the quest for the mythical sword with the broader political stakes of the conflict. The book serves as a robust conclusion to the narrative arc established in earlier installments, satisfying those who favor grounded, action-oriented historical storytelling.