In an era of fake news, alternative truths and leaked secrets making constant headlines, we are telling stories about ourselves all the time, and we are telling them in so many different ways. From vlogs and blogs to tweets and posts, from photos and gifs to live streams. From instant updates that disappear to rash words that last for ever and data trails that chart every step we take.

While people around her shake their heads and mutter bad things about the new levels of day-to-day deceit, Kathleen Wyatt is busy marvelling at how society manages it. How do we do this extraordinary thing - often under the most ordinary of circumstances? How do we convince each other to suspend disbelief? And why do we do it?

In this brilliant, wide-ranging study of lies and lying, Wyatt introduces us to a cast of professionals and professional liars - from scientists to investigators, from double agents to journalists, from toddler specialists to a fallen titan of industry - all to help her prove a remarkable thesis: lies hold us together as much as they push us apart and may be vital in a healthy society.