Ancient authors describe what could well be entrances into parallel universes. Not only that, there is much information about how to open and close these portals, which has been lost in time. Whitley Strieber and David Weatherly discuss such portals, and portal areas such as the Superstition Mountains, and how to both call and dismiss beings from other realities. Whitley tells a story of what happened to him when he asked the grays to show him a vision of hell. (Don’t expect to forget this. Ever.) They close with a discussion of grinning men and the Provincetown Banshee. Thrilling stuff!