Stratton is back in a tense thriller set a hundred metres below sea in America's notorious Styx penitentiary

After the British military lose an officer to Taliban insurgents in Afghanistan, a desperate race begins to find his killers. Little do the assailants know that the precious information they have stolen could bring down the entire network of Western intelligence in the Mid-East. But then one of them is captured by US troops and flown to the States for interrogation. And so begins a nail-biting, claustrophobic and explosive thriller that will ultimately lead British operative John Stratton to the Styx penitentiary, America's undersea prison.