Five years after the catastrophe that destroys most of the human race, the tiny remnants of the British population are beginning to claw their way back to some form of civilisation. The survivors of Wales and the Marches are led by Brennan, a former brigadier who was left behind by the escaping government to salvage as much as possible. Brennan sets up his followers in a college near Newport, but attacks from abroad and from a rival group, drive them to shelter in Cardiff Castle, still intact amid the ruins of the city. When they go to the aid of the besieged Cambridge, the scale of the opposition and the enormity of their mission become apparent. It is all destined to end in a dramatic denouement along the M4 motorway. Not only is Brennan an exciting tale in its own right but it also reveals intriguing historical parallels. Unmissable!