‘My world was dark, no colour, no right or wrong and no back-up. People like me exist to fight those no one else dares face. I wasnt the last resort; I was the only option. Tom Marcus was recruited by M15 in the wake of the 7/7 attacks on London. After five years spent undercover as part of a covert British Army Special Operations unit he offered the Security Service the edge they so desperately needed. Following months of intensive training, Marcus was thrown into a world of relentless, unimaginable pressure; a never-ending struggle to prevent terrorist atrocities on our city streets, foil devastating strikes against the nations infrastructure, and keep our countrys secrets safe from foreign spies. Split second decisions carried life or death consequences. And not all his colleagues would survive the fight. In this explosive first-hand account, Soldier Spy lifts the lid on the war being waged by M15 to keep us safe in our towns and cities for the first time; a blistering, visceral insight into life on the front line against terror, revealed in never-before-seen detail. It was a job which would inevitably exact a heavy price. But when it came down to it, Marcus knew he didnt have a choice. ‘Some people join the service out of a sense of duty, some out of wanting to do some good by removing the evil. I did it because its all I knew. Im a hunter of people and Im damn good at it...