Book excerpt: Abductions, invasions, and encounters. Entities, aliens, and ancients. Who is among us? What happened in the past and what should we expect for the future? Explore the strange world of the unknown with paranormal researcher extraordinaire Brad Steiger, an author of thousands of books and articles on mysterious secrets and unexplained phenomena. From creepy strangers and shape-shifting species to unexpected warnings and mysterious vanishing, you’ll be startled to learn what inhabits the world of Real Nightmares: Alien Strangers and Foreign Worlds.