Manhunter / Chris Ryan.

Following a botched operation in Afghanistan, Bowman is recruited into "The Cell", a covert unit within the SAS working alongside the police, a unit so secretive most of the other guys in the Regiment don't even know it exists. Their mission: to tackle international organised crime that threatens British interests. In a world where the Russian government is the real mob, it is the job of The Cell to take the fight to the enemy. But when a notorious British fixer to the Kremlin goes on the run, Bowman soon finds himself drawn into a deadly conspiracy and a race against time to find his target, before the Russians get to him first.