Sometimes the truth is anything but honest. Sometimes the stories everyone knows by heart are lies. Sometimes lies are all we have left. Two thousand years ago, thirty Tyrian shekels were paid to secure the most infamous betrayal of all time. Melted down by the grandsons of Judas Iscariot, Menahem and Eleazar ben Jair, in the dark heart of the Sicarii fortress, Masada, the silver was re-forged as a dagger. When Sicarii zealots committed mass suicide in AD73, the dagger of Iscariot and the truth of his sacrifice were lost. Until now. A religious cult calling itself the Disciples of Judas has risen in the Middle East. Its influence is pernicious, its reach long. In thirteen cities across Europe, thirteen people martyr themselves in the name of Judas, promising forty days and forty nights of terror. Day by day the West wakes to increasingly more harrowing acts of terror. Sir Charles Wyndham's team of combat specialists, codename Ogmios, tracks a labyrinthine course through truth, shades of truth and outright lies that take them from the backstreets of London to the shadow of Checkpoint Charlie in Berlin all the way into the heart of the Holy See itself.Forty days and forty nights of fear. And today is day one.