Matthew Parris presents the biographical series in which his guests choose someone who has inspired their lives. Green MP Caroline Lucas nominates German Green politician Petra Kelly. Kelly was one of the first Green parliamentarians to be elected anywhere in the world. Intense, charismatic and beautiful, she became an international political superstar who rejected the idea of conventional politics. But she fell out with her colleagues and became reliant on her lover, a former German army General turned peace activist, Gert Bastian. Bastian, possibly fearing exposure as a Stasi agent, murdered Kelly and himself in 1992. Joining the discussion is Kelly's biographer and former Green Party activist, Sara Parkin.