Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | Transit to Scorpio | 1972 | Kenneth Bulmer | N/A |
| 2 | Murder on Kregen | 2014 | Kenneth Bulmer | Buy |
| 3 | The Suns of Scorpio | 1974 | Kenneth Bulmer | N/A |
| 4 | Warrior of Scorpio | 1973 | Kenneth Bulmer | N/A |
| 5 | Swordships of Scorpio | 1975 | Kenneth Bulmer | N/A |
The Phantom Cycle by Kenneth Bulmer is a five-book series set on the planet Kregen, the same world featured in the Dray Prescot saga. The books span from 1972 to 2014, with Murder on Kregen published posthumously.
Like the Balintol Cycle, the Phantom Cycle explores corners of the Kregen universe that the main Dray Prescot series does not cover in detail. The overlapping settings and timelines give dedicated readers a richer picture of this complex alien world.