Ultimatum: a gripping and relentless fever-pitch thriller by the best-selling author Simon Kernick (Tina Boyd Book 6) - Tina Boyd

THE THREAT8am: an explosion blasts through a cafe in Central London. THE ULTIMATUMMinutes later, a call from an unknown terror group warns that a far greater attack will be launched in 12 hours' time. THE PRISONERWilliam Garrett, AKA Fox, is awaiting trial for mass murder.