With the publication of the widest survey of sexual behaviour since the Kinsey Report, Matthew Sweet picks apart the data with its author, David Spiegelhalter, and New Generation Thinker, Fern Riddell, author of The Victorian Guide to Sex. Nick Broomfield discusses his latest documentary, Tales of the Grim Sleeper, about a serial killer in LA which exposes the deep divide still evident in America today. Plus, Queen Mary's Matt Rubery on the fascinating history of the audio book.