The author of bestselling M: Maxwell Knight, MI5's Greatest Spy talks about his latest book Our Man in New York. It’s the eye-opening story of how MI6 spymaster William Stephenson set up an undercover operation in the USA that used ‘fake news’, opinion polls, and pressure groups to help sway American opinion in 1941 and bring a previously reluctant USA into World War Two. It’s a tale with contemporary resonance and one that’s close to Hemming’s heart – Stephenson not only asked his grandmother to be a spy, but also saved the life of the author’s father.

Chaired by Harry Pearson