Dimensions: A Casebook of Alien Contact (Unabridged)
2026
Confrontations: A Scientist's Search for Alien Contact (Alien Contact Trilogy, Book 2) (Unabridged)
2026
The Eighth Tower: On Ultraterrestrials and the Superspectrum (Unabridged)
2019
Our Haunted Planet (Unabridged)
2015
Men in Black: The Secret Terror Among Us (Unabridged)
2013
Revelations: Alien Contact Trilogy, Book 3 (Unabridged)
2026