He's one of the most successful historical fiction writers of his generation — the first author ever to top the UK fiction and non-fiction bestseller charts simultaneously, and the man behind sweeping epics on Julius Caesar, Genghis Khan, and the Wars of the Roses. After a long time trying to get him on the show, Matthew and Justin finally sit down with the brilliant Conn Iggulden.

In this wide-ranging conversation, Conn talks about what drew him to Nero as a subject — a figure loved by the Roman people despite his cruelties, shaped by one of history's most fascinating and ruthless women, Agrippina. He reflects on the challenges of working with unreliable ancient sources, the missing texts he'd give anything to read (Agrippina's autobiography, the lost end of Tacitus), and how he navigates the gaps that historical fiction always has to fill.

The conversation takes in Roman slavery, suicide and honour, why visiting a battlefield in person changes everything (including a story about the six-foot-wide exit ramp at Sandal Castle that explains a medieval defeat), and his upcoming novel about the Battle of Arnhem — a project with a deeply personal dimension, since his own father was there.

There's also a joyful digression into Dungeons & Dragons, David Gemmell, the famous photo with Bernard Cornwell and George MacDonald Fraser, why fantasy is actually harder to write than historical fiction, and the title dispute between Conn and his brother that's been going on for decades.

If you love historical fiction, this one is essential listening.

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