Ben Alderson-Day is a Professor of Psychology and the Co-Director of the Discovery Research Platform for Medical Humanities at Durham University. He is the co-founder of the Early Career Hallucinations Research group and the Scientific Chair of the International Consortium on Hallucinations Research. A specialist in atypical cognition and mental health, his work spans cognitive neuroscience, psychiatry, philosophy and child development. He lives in Newcastle upon Tyne with his wife and two daughters.

Winner of the British Psychological Society 2023 Book Award for Popular Science 'An eye-opening book that makes senses of one of life’s mysteries. It has stayed with me.'Claudia Hammond, author of The Art of Kindness'Alderson-Day offers a thrilling and erudite survey of the experience of "felt presence" – where one has the strong feeling that someone, or something, is there, but without any input from our traditional senses. The book brings together rich testimonies of this core human experience, with the insights of myth, history, philosophy, psychology, neuroscience, and psychiatry. Reading it leaves one with an enriched appreciation of what we are and how much more we have yet to understand about ourselves.'Matthew Broome, Director of the Institute for Mental Health, University of Birmingham'The sense that you are not alone - that someone or something is "there" - is a fascinating topic and this marvellous book draws across many different kinds of experiences to give a coherent account of the kinds of processes that underlie this feeling.'Sophie Scott, Director of the Institute of Cognitive Neuroscience, University College London'Presence is a fascinating read. The writing is lively and the stories are compelling. Thanks to Alderson-Day, the mysterious world of visions, voices and ghostly presences is just that bit more understandable.'Jason Arunn Murugesu, New Scientist 'Those interested in developing a richer understanding of the phenomenon will appreciate Alderson-Day's in-depth exploration of the topic and detailed endnotes.'Library Journal'Alderson-Day’s wonderful book truly represents such an intellectual experience and is a rare achievement as well as being a delight to read.'Alastair Morgan, The Polyphony 'This book is an excellent and enjoyable discourse on the topic, written engagingly for a general reader, and covering much associated ground.'Graham Kidd, Journal of the Society of Psychical Research

• Preface: what is there?Part I: Phantom others1 A thickness in the air2 'Things which never can be spoken of'3 The double4 Luke5 The presence robot6 'I’ll set the table for three people when it’s just me and my wife'Part II: Fellow travelers7 The walnut of reality8 The marathon monk of Billingham9 Seeing darkness10 Spirit11 In two minds12 You never askedIndex