John Yorke looks at Patrick Hamilton’s 1938 stage play Gaslight.  A big hit on London’s Shaftesbury Avenue and an even bigger success on Broadway, Patrick Hamilton’s drama of the mental abuse of Bella Manningham by her husband Jack lives on, sometimes unacknowledged, as the source of the term Gaslighting - one person’s attempt to make another doubt their sanity.

From EastEnders to the Archers, Life on Mars to Shameless, he has been obsessed with telling big popular stories. He has spent years analysing not just how stories work but why they resonate with audiences around the globe and has brought together his experience in his bestselling book Into the Woods. As former Head of Channel Four Drama, Controller of BBC Drama Production and MD of Company Pictures, John has tested his theories during an extensive production career working on some of the world’s most lucrative, widely viewed and critically acclaimed TV drama. As founder of the hugely successful BBC Writers Academy John has trained a generation of screenwriters (his students have had 17 green-lights in the last two years alone).