Have you ever had your car keys or television remote control inexplicably vanish from under your nose, only to reappear months later in another part of the house for no evident reason? Most would dismiss it as absent-mindedness, with perhaps a joking remark about paranormal activity. Yet remarkable circumstances surrounding many such accounts suggest that the mysterious disappearance of objects could be more than "just one of those things." Examining a large selection of fascinating narratives, this book investigates the "disappearing object phenomenon from a scientific standpoint. Both skeptical and supportive perspectives on DOP are considered, leading to the conclusion that "objects behaving badly" are subtle indicators of a controversial take on the nature of reality.