Behind the dark walls Dark secrets hide in the shadows And in the presence In the fortress of light In the fortress of light Darkness is falling As the spirit of God slips away You're a sinner by night And a holy saint by day In the sacred corridors evil is set free Lurking among the shadows of the monastery Heresy in disguise Heresy in disguise His eyes glow like fire As he turns the ancient pages Discovering mysteries Not revealed in many ages Not revealed in many ages Brother William, brother of sin What do you do as the sun descends? Beware of what you might see As you open the door to the beast In the sacred corridors evil is set free Lurking among the shadows of the monastery Heresy in disguise Heresy in disguise In the sacred corridors evil is set free Lurking among the shadows of the monastery Heresy in disguise Heresy in disguise