'It grips like a python from the first page, squeezing the breath out of the reader' DAILY MAIL

'Outstanding' SUNDAY TIMES

'Breathless action' THE TIMES

Hidden from prying Western satellites, Iranian scientists are at work on a banned device . . .

They are acting on the orders of a renegade cell within Iran's Revolutionary Guard Corps, whose objective is to transform their country into a nuclear-armed nation, and so seal its domination of the Middle East.

Britain's intelligence agencies know something is up. Someone on the inside is ready to hand over information - but the rendezvous with SIS officer Luke Carlton goes bloodily wrong . . .

Then MI6 sees an opportunity to recruit an individual with unique access to the IRGC hardliners. Luke is chosen to reel them in. Going into Iran undercover is dangerous enough, but then there's a killing and a kidnapping and the British government is presented with a shocking ultimatum.

With time running out, it seems only Luke can stop a cataclysmic new war in the Gulf . . .
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Readers love Ultimatum-

***** 'An action-packed thriller . . . very authentic'
***** 'A real page turner . . . thrilling adventure'
***** 'Gripping page turner that keeps you glued to the story'