In the style of Bernard Cornwell, The Heretic's Secret Trilogy is a rollicking historical adventure set during the bloody 13th century wars against the Cathar Heretics of Languedoc. When the armoured knights of Pope Innocent III swept south in 1209, most thought they would be gone by summer's end but, led by the fanatical Arnaud Aumery and the ambitious Simon de Montfort, they stayed for three fiery decades. In that time they slaughtered thousands of Cathars, burned countless towns and castles, destroyed a thriving country that rivaled France in power and culture, and created the foundations for the shape of western Europe we recognize today.John and Peter enjoy arguing about their differing views of the world. Peter sees the Church and an unquestioning acceptance of God's word as the way to salvation. John sees developing an understanding of the wonder of the world around him as a way of becoming closer to God. As the chaos of war erupts around them, the friendly differences of childhood demand that they take sides.Troubled by mysterious visions, Peter seeks refuge in the Church and becomes an assistant to the militant Aumery. Repelled by the horror he sees around him, John finds himself drawing closer to the persecuted Cathar heretics. As the brutal holy war expands and the flames of the Inquisition spread, Peter and John find themselves on opposite sides of a dangerous search for a secret that may have the power to change the world.

"...in Wilson's hands, the subject entertains as it horrifies. Wilson never lectures readers, but allows his characters to participate in history...he neither glorifies war nor softens the raw violence of the Inquisition...it is a brave book, an unsettling book, and one that is very much needed at this time." Mark D. Dunn, The Globe and Mail