Today the global war against terrorism has become a desperate, life-or-death struggle for the western democracies. In the armed chaos that is the post-Cold War world, the stakes have never been higher, the consequence of defeat never more dire. And for British Intelligence the time has come to put moral scruples aside and throw the rulebook out of the window. Officially the organisation known as Executive Support doesn't exist. But for its scores of far from innocent victims it is all too real. Its aim: to terrorize the terrorists, its nickname: the Dead Headers. And now the Dead Headers are facing their biggest challenge yet - a terrifying conspiracy that leads the Dead Headers from a secretive German pharmaceuticals company to an Iraqi biological weapons base in the Libyan desert, from a gruesome sex-murder in London's Hammersmith to a power struggle at the heart of the Iranian regime. And by the time the final piece is in place, the fate of millions will have been decided...