In July 1945 MI6 agent Paul Dark took part in a top secret mission to hunt down and execute Nazi war criminals. He will discover that everything he understood about that mission, about its consequences, and about the woman he once loved, has been built on false foundations.

Now it's 1969 and a KGB colonel called Slavin has walked into the High Commission inLagos, Nigeria,and announced that he wants to defect. His credentials as a defector are good - he has highly suggestive information which indicates that there is yet another double agent within MI6, which would be a devastating blow for a Service still coming to terms with its betrayal by Kim Philby and the rest of the Cambridge Five.

Paul Dark has been largely above suspicion during MI6's years of self-recrimination. But this time he can see his number coming up. For some it would be fight or flight time. But when you discover that everything you've taken for granted and trusted for twenty four years turns out to be untrue, and when your arrest may only be moments away, then perhaps the only option is both fight and flight.

Free Agent is a twisting, intense thriller set between London and Nigeria during the height of the Cold War. It's a novel of innumerable cliffhangers, all set within a constantly evolving moral universe, and the surprises keep coming until the very last page. Jeremy Duns is also the author of the acclaimed Spy Out the Land, Song of Treason and The Moscow Option.