The Spy Who Pretended To Be Homeless

Tom Marcus - not his real name - was a spy, an undercover agent for the British security agency, MI5. A few years ago he spent several months pretending to be a homeless man living on the streets of north London. He went to great lengths to blend in, but it was all worth it when he ended up preventing two coaches full of school children from being blown up. Image: homeless man sleeping in the streets of London Credit: Dan Kitwood/Getty Images