John Simpson,Sarfraz Mansoor, Anja Shortland and Hannah Critchlow

More lively discussion and ideas from the BBC Tent at this year’s Hay Festival. Guto Harri is joined by the BBC’s John Simpson to sift fact from fiction in his new thriller. Plus Anja Shortland on the dilemmas of hostage negotiation, Sarfraz Manzoor on seeing his personal memoirs translated into film, and neuroscientist Hannah Critchlow on whether we really are the free-thinkers we imagine ourselves to be.