The Undercover Police Scandal: Love and Lies Exposed S01E02 - There Are Others

A mutual friend introduces Helen and Alison, and they work out that their former partners must have belonged to a Metropolitan Police squad that infiltrated left-wing groups. No-one is interested in their story and both women are forced to move on with their lives. Seven years later, an online post finally unmasks former officer Mark Kennedy, whose undercover name was Mark Stone.