Guidebooks to the Unexplained: Area 51
Guidebooks to the Unexplained: Lost Lands
Guidebooks to the Unexplained: Witches
Guidebooks to the Unexplained: Cryptids
Guidebooks to the Unexplained: Ghosts
Guidebooks to the Unexplained: Men in Black
Documents of the Salem Witch Trials: Eyewitness to History
Surviving the Impossible: Surviving an Alien Invasion
Paranormal Investigations: Aliens, UFOs, and Unexplained Encounters
Paranormal Investigations: Bigfoot, the Loch Ness Monster, and Unexplained Creatures
Paranormal Investigations: ESP, Superhuman Abilities, and Unexplained Powers
Paranormal Investigations: Ghosts, Possessions, and Unexplained Presences
Paranormal Investigations: The Hope Diamond, Cursed Objects, and Unexplained Artifacts
Surviving the Impossible: Surviving a Zombie Apocalypse
Paranormal Investigations: The Bermuda Triangle, Stonehenge, and Unexplained Places
American History: The Salem Witch Trials: A Crisis in Puritan New England
Understanding the Paranormal: Investigating ESP and Other Parapsychological Phenomena
Monster Hunting: Hunting Vampires