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A Thriller

#1 bestselling author Simon Kernick will leave you breathless with his sheer storytelling power in this race-against-time thriller about a terrorist threat in London.

An explosion blasts through a cafe in Central London. Minutes later, a call from an unknown terror group warns that a far greater attack will be launched in twelve hours’ time.

William Garrett, nicknamed “Fox,” is awaiting trial for mass murder. He claims he can name the bombers—but only at a price.

It’s a terrifying race against time for Detective Inspector Mike Bolt and Deputy Commissioner Tina Boyd as they chase their targets across the city in a desperate bid to prevent a major atrocity before it’s too late…

As shocking revelations are unveiled, you’ll be racing to the last page as fast as the characters in Ultimatum. As #1 New York Times bestselling author Harlan Coben says, “Simon Kernick writes with his foot pressed hard on the pedal. Hang on tight!”
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  • Atria Books | 
  • 352 pages | 
  • ISBN 9781476706252 | 
  • September 2014
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Read an Excerpt




His whole world collapsed exactly three seconds after the door opened.

In the first second, her pale, beautiful face peered through the gap, then disappeared as she moved aside to let him in. The next second saw him walking into the cramped front room and, with a rather foolish flourish, lifting up the small bunch of petrol-station flowers he’d brought her. And the third was when the man in the hood appeared out of the... see more



Martha Crossman opened the door to her local coffee shop and stepped inside.

The place was busy with the pre-work crowd—mainly business­people—and a powerful blast of coffee, conversation, and central heating hit her straight away. The normality of the scene filled her with an intense jealousy. When Martha had last been here a few days ago, her life had seemed so normal and straightforward. Not happy—she hadn’t been... see more

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About the Author

Simon Kernick
Photograph by Johnny Ring

Simon Kernick

Simon Kernick is a Sunday Times #1 bestselling author and one of the UK’s foremost thriller writers. His twelve novels have been translated into more than twenty languages and have sold more than four million copies worldwide. He lives in London.




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