For over 40 years a secret organisation spied on British citizens: if you supported women’s rights, wanted to save the planet or opposed racism, you were a target. As part of official police business, officers were sanctioned to go deep undercover and even father children with those they were reporting on. We hear the testimony of five women who were deceived by undercover police spies as well as Tariq Ali, Tom Fowler, Peter Hain and an undercover police whistle-blower.