Daniel Freeman, Professor of Psychology at Oxford, has spent thirty years at the vanguard of paranoia research and treatment. Freeman develops life-changing treatments for clinical paranoia – often using state-of-the-art technology like virtual reality. He reveals that suspicion is rife in society, with paranoia widespread, conspiracy theories rampant and emotion all too often trumping evidence. He discovers the causes of mistrust, including the role of genes, trauma, lack of sleep, worry, low self-confidence, cannabis use and hearing voices, and delves into the murky world of Covid-19 conspiracy theories. This is also a practical book. Freeman shows how we can measure our own levels of mistrust. He explains how we can remedy things if those levels are higher than we’d like, because although mistrust can seem engrained, things can change for the better. Ultimately, it can be overcome.