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Publication Order of Katherine “Kitty” Katt Books
| Touched by an Alien | (2010) | Hardcover  Paperback  Kindle |
| Alien Tango | (2010) | Hardcover  Paperback  Kindle |
| Alien in the Family | (2011) | Hardcover  Paperback  Kindle |
| Alien Proliferation | (2011) | Hardcover  Paperback  Kindle |
| Alien Diplomacy | (2012) | Hardcover  Paperback  Kindle |
| Alien vs. Alien | (2012) | Hardcover  Paperback  Kindle |
| Alien in the House | (2013) | Hardcover  Paperback  Kindle |
| Alien Research | (2013) | Hardcover  Paperback  Kindle |
| Alien Collective | (2014) | Hardcover  Paperback  Kindle |
| Universal Alien | (2014) | Hardcover  Paperback  Kindle |
| Alien Separation | (2015) | Hardcover  Paperback  Kindle |
| Alien in Chief | (2015) | Hardcover  Paperback  Kindle |
| Camp Alien | (2016) | Hardcover  Paperback  Kindle |
| Alien Nation | (2016) | Hardcover  Paperback  Kindle |
| Alien Education | (2017) | Hardcover  Paperback  Kindle |
| Aliens Abroad | (2018) | Hardcover  Paperback  Kindle |
| Aliens Like Us | (2019) | Hardcover  Paperback  Kindle |
Publication Order of The Martian Alliance Books
| The Royal Scam | (2011) | Hardcover  Paperback  Kindle |
| Three Card Monte | (2012) | Hardcover  Paperback  Kindle |
| A Bug’s Life | (2015) | Hardcover  Paperback  Kindle |
Publication Order of Necropolis Enforcement Files Books
Publication Order of alt.sherlock.holmes Books
Publication Order of Standalone Novels
| Happy Acres Haunted Hotel for Active Seniors | (2013) | Hardcover  Paperback  Kindle |
| Plush Life | (2016) | Hardcover  Paperback  Kindle |
Publication Order of Non-Fiction Books
| Random Musings from the Funny Girl: Or How to Make the Most of Multiple Personality Disorder | (2014) | Hardcover  Paperback  Kindle |
Publication Order of UFO Anthology Books
| Unidentified Funny Objects | (2012) | Hardcover  Paperback  Kindle |
| Unidentified Funny Objects 2 | (2013) | Hardcover  Paperback  Kindle |
| Unidentified Funny Objects 3 | (2014) | Hardcover  Paperback  Kindle |
| Funny Science Fiction | (2015) | Hardcover  Paperback  Kindle |
| Unidentified Funny Objects 4 | (2015) | Hardcover  Paperback  Kindle |
| Funny Fantasy | (2016) | Hardcover  Paperback  Kindle |
| Unidentified Funny Objects 5 | (2016) | Hardcover  Paperback  Kindle |
| Funny Horror | (2017) | Hardcover  Paperback  Kindle |
| Unidentified Funny Objects 6 | (2017) | Hardcover  Paperback  Kindle |
| Unidentified Funny Objects 7 | (2018) | Hardcover  Paperback  Kindle |
| Unidentified Funny Objects 8 | (2020) | Hardcover  Paperback  Kindle |
| Anthology series. | ||
Publication Order of The X-Files Books
| Goblins | (1994) | Hardcover  Paperback  Kindle |
| X-Files Number 4 | (1995) | Hardcover  Paperback  Kindle |
| Whirlwind | (1995) | Hardcover  Paperback  Kindle |
| Ground Zero | (1995) | Hardcover  Paperback  Kindle |
| Ruins | (1995) | Hardcover  Paperback  Kindle |
| Hunter | (1995) | Hardcover  Paperback  Kindle |
| Antibodies | (1997) | Hardcover  Paperback  Kindle |
| Skin | (1998) | Hardcover  Paperback  Kindle |
| Fight the Future | (1998) | Hardcover  Paperback  Kindle |
| I Want to Believe | (2008) | Hardcover  Paperback  Kindle |
| X-Files: Trust No One | (2015) | Hardcover  Paperback  Kindle |
| X-Files: The Truth Is Out There | (2016) | Hardcover  Paperback  Kindle |
Publication Order of Anthologies
| X-Files: Trust No One | (2015) | Hardcover  Paperback  Kindle |
| Galactic Stew | (2020) | Hardcover  Paperback  Kindle |
| Brave New Worlds | (2022) | Hardcover  Paperback  Kindle |