Warren Ellis' Strange Killings

Former soldier and current combat magician William Gravel pits his skills against rogue agents who use black magic to threaten society. For the second time in history, the British Government sends in its crack troops, the Special Air Service, to quell a major prison riot. But not even these, the most accomplished and frightening soldiers on Earth, are equipped to face what lies at the center of the prison, the heart of the riot. In fact, the only man in the S.A.S. qualified to deal with the horror within is the recently disgraced Sergeant Major William Gravel, combat magician. For inside the prison lies a man waiting to fight with more than mortal weapons...