I Spy: My Life in Mi5, Paperback

'One of the most successful MI5 undercover surveillance officers of his time.' - SunTom Marcus spent years of his life working covertly against those who want to do us harm. Now, for the first time, he tells the full story of what it is like to live your life in the shadows and who you need to become to survive.First published in 2016, Soldier Spy was a series of stories from Tom's years in MI5 and has now sold over 250,000 copies across all editions and was a Sunday Times bestseller for five months. I Spy takes us deeper into his life as a spy.

Tom Marcus, former MI5, joined the Army at 16 and went on to become the youngest member of the Armed Forces to pass the 6-month selection process for Special Operations in Northern Ireland. He was hand-picked from the Army into MI5 as a Surveillance Officer. He left the Security Service recently after a decade on the front line protecting his country due to being diagnosed with PTSD. An extraordinary battle and recovery took place which led Tom to write his first book, Soldier Spy, which has been vetted and cleared for publication by MI5. Tom, now consults on projects within TV and film including the TV dramatization of his book Soldier Spy.