My guest on this week’s Book Club podcast is the former FBI director James Comey, who is making his debut as a thriller writer with an engrossing police procedural, Central Park West. Jim tells me how he mined his own early career as a prosecutor in the southern district of New York to produce this world of hard-bitten investigators and murderous mafiosi (and how he was able to bring it up to date because it’s a world his daughter now inhabits). And, as the investigator at the centre of the Scooter Libby and Hillary Clinton email cases – among many others involving classified intelligence – he gives me his take on what Donald Trump’s indictment means and where it’s likely to lead.