'Second Heaven' (a Book of Ghostly Apparitions)

This book is a gathering of tales "world-wide". Many e-mail addresses have been included by permission ... "for reasons of authenticity". A book was written by myself / prior to this one, and was entitled: 'Psychic Limbo', concerning many unexplained experiences that I'd had growing up, and was labeled "Occult". Regardless of it's given label, these readers have testified that these stories are infact true (of which I think gives it just that little added something). Stories of apparitions which have been seen in the form of a man wearing a hat, or for that matter without any distinguishable form at all. I have seen this apparition myself, and have chosen to turn to various religious perspectives on just what these apparitions may seem to be(?), the Talmud, the Bible, Kabbalah / Jewish perspectives etc. / a very ecceletic blend of theories / opinions. So have you ever seen something out of the corner of your eye(?) ... something you could not explain? ... You may not be the only one!