John Humphrys presents another heat of the classic quiz. Subjects are Andy Warhol, the Roman Emperor Septimus Severus, Nicholas Hawksmoor and the X-Files.

The last place in the semi-finals is up for grabs as John Humphrys puts four more contenders in the spotlight. Subjects tonight are Naval Battles of the First World War, Charles Laughton, the de Havilland Mosquito and Garth Ennis's Punisher Max series.