The Jed Walker series

A sinister group - code-named Zodiac - has launched devastating global attacks. Twelve targets across the world, 12 code-named missions. Operating distinct sleeper cells, they are the ultimate terrorist organisation, watching and waiting for a precise attack to activate the next group. It is a frightening and deadly efficient way to stay one step ahead. And cause the most chaos. For ex-CIA operative Jed Walker, chaos is his profession. On the outer, burned by his former agency, he is determined to clear his name.

When the hunters become the hunted, ex-CIA agent Jed Walker is the man you need. In 2011, Seal Team Six killed Osama Bin Laden. Now, four years later, someone is eliminating Team Six - one by one they are turning up dead. Jed Walker, ex-CIA, is an outsider back in the game. He's been chasing down a sinister group code-named Zodiac that the big guns - MI5, CIA, the Pentagon - have failed to eradicate. Walker follows the trail of bodies, uncovering secrets and making connections he's not supposed to make.

The world is under cyber-attack. The secretive terror outfit of linked lone-wolf operatives known as Zodiac has activated another terrorist cell. Chaos will be unleashed at six-hour intervals, with each event more catastrophic than the last, culminating in a devastating global catastrophe within 48 hours. Consequences are unthinkable. The US president has the power to enact the Internet Freedom Act - the 'kill switch'. Turning off the net will stop the attacks and give the CIA and the Pentagon time, but it's not that simple.

In war-torn Syria, a massacre survivor is pulled from beneath a pile of bodies. She is given one instruction: 'find Jed Walker'. Walker is ex-CIA - a man who thought he was long out of the game. Discovering a terror outfit is running people-smuggling from the Middle East and into the United States, he is drawn back in to fight their evil trade. At first Walker thinks these human traffickers are driven purely by profit and greed. But it is much worse than that - and it has ties to the highest levels of power.

It's 2005, and Jed Walker has just joined the CIA. As a 10-year veteran of Air Force Special Operations, Walker is used to being at the pointy end of things. But normally the front line is much further from home. Sent to New Orleans on the trail of Russians wanting to claim back what was stolen from them in Afghanistan, it doesn't take long for Walker to realise that in the murky world of espionage, the rules of war do not apply.