Presence: The Strange Science and True Stories of the Unseen Other

A psychologist's journey to understand one of the most unusual experiences known to humankind: the universal, disturbing feeling that someone is there when we are alone

These experiences of sensing a “presence” when no one else is there have been given many names-the Third Man, guardian angels, shadow figures, “social” hallucinations-and they have inspired, unsettled, and confounded in equal measure.

While the contexts in which they occur are diverse, they are united by a distinct and uncanny...