Ultimatum by Simon Kernick

A threat has been made. An ultimatum delivered. Innocent people are in mortal danger. The gripping new bestseller from the master of the race-against-time thriller.

THE THREAT
8am: an explosion blasts through a cafe in Central London.
THE ULTIMATUM
Minutes later, a call from an unknown terror group warns that a far greater attack will be launched in 12 hours' time.

THE PRISONER

William Garrett, AKA Fox, is awaiting trial for mass murder. He claims he can name the bombers. But only at a price.

THE CLOCK IS TICKING

It's a terrifying race against time for DI Mike Bolt and DC Tina Boyd as they chase their targets across the city in a desperate bid to stop a major atrocity - before it's too late ...