A hair-raising follow-up to Andy McNab's thrilling series, Firewall finds ex-SAS trooper Nick Stone in desperate need of cash, soon finding himself in the middle of a Russian offensive to relaunch the Cold War.

When he is offered a lucrative freelance job, Stone thinks his problems are over. All he needs to do is kidnap a Russian mafia warlord. All Stone needs to do is kidnap a Russian mafia warlord.

Soon Stone is thrust into the grim underworld of Estonia, with unknown aggressors stalking the Arctic landscape. Russia has launched a cyber-espionage attack, hacking into the West's most sensitive military secrets. Stone must stop them, but the mafia are waiting in the wings with their own chillingly brutal solution...