Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | Alien in the Attic | 2024 | Celia Kyle | Buy |
| 2 | Alien in the Depths | 2025 | Celia Kyle | Buy |
| 3 | Alien on the Moon | 2025 | Celia Kyle | Buy |
Celia Kyle’s Thryal Mates series is a three-book fiction sequence that started with Alien in the Attic in 2024. The titles point to an alien romance setup, with each book placing its extraterrestrial characters in a different location: an attic, the ocean depths, and finally the moon. Kyle has written extensively in the paranormal and sci-fi romance space, and this series fits squarely in that tradition.
The second and third books, Alien in the Depths and Alien on the Moon, both came out in 2025, making this a fast-moving series. Readers who enjoy alien mate stories will find the complete run here, and publication order is the best way to follow along as the world and its characters develop from one book to the next.