Brabant, 1473. A clandestine brotherhood hides a secret that could bring down the Catholic Church. Their chosen hiding place - the art of Hieronymus Bosch. London, 2014. An excommunicated priest approaches both the Church and the art world, claiming to possess an artefact that will destroy their reputations. This man, Nicholas Laverne, is poised to end over 500 years of silence and injustice. Yet, unknown to Nicholas, he has just summoned a killer intent on silencing him.