George Noory on Dreamland

Talking-to-the DEAD is another thought provoking book.

http://www.unknowncountry.com/dreamland/george-noory-contacting-dead

Of course, not all spirits & entities are on a benevolent wavelength.

http://c-shapes.blogspot.com/2011/08/djinn-hidden.html

http://c-shapes.blogspot.com/2011/10/george-noory-alex-jones.html