- *How to Catch Aliens: A Handbook for the Amateur Alien Hunter* (2010)
- *The UFO Bible: A Comprehensive Guide to Extraterrestrial Life and Alien Contact* (2011)
- *Alien Abductions: The Real Truth* (2012)
- *The Roswell Incident: The True Story of the UFO Crash and Alien Encounter* (2013)
- *Area 51: The Secret History of America's Most Top-Secret Military Base* (2014)
- *The Montauk Project: The Top-Secret CIA Experiments in Time Travel and Teleportation* (2015)
- *The Philadelphia Experiment: The True Story of the U.S. Navy's Secret Time Travel Experiments* (2016)
- *Project Blue Book: The U.S. Air Force's Secret Investigation of UFOs* (2017)
- *The Secret Space Program: The Untold Story of America's Extraterrestrial Agenda* (2018)
- *The Greys: The Extraterrestrial Beings Who Are Here Among Us* (2019)
Articles
- "UFO Sightings: The Truth Is Stranger Than Fiction," _The New York Times_, April 15, 2011
- "Alien Abduction: The Real Truth," _The Huffington Post_, May 17, 2012
- "Roswell: The True Story of the UFO Crash and Alien Encounter," _The Washington Post_, July 4, 2013
- "Area 51: The Secret History of America's Most Top-Secret Military Base," _The Los Angeles Times_, September 11, 2014
- "The Montauk Project: The Top-Secret CIA Experiments in Time Travel and Teleportation," _The Atlantic_, November 18, 2015
- "The Philadelphia Experiment: The True Story of the U.S. Navy's Secret Time Travel Experiments," _The Daily Mail_, January 13, 2016
- "Project Blue Book: The U.S. Air Force's Secret Investigation of UFOs," _The Wall Street Journal_, March 15, 2017
- "The Secret Space Program: The Untold Story of America's Extraterrestrial Agenda," _The New Yorker_, May 14, 2018
- "The Greys: The Extraterrestrial Beings Who Are Here Among Us," _The Guardian_, July 12, 2019