Publication Reading Order
| # | Title | Year | Buy |
|---|---|---|---|
| 1 | The Liquidator | 1964 | Buy from Amazon |
| 2 | Understrike | 1965 | Buy from Amazon |
| 3 | Amber Nine | 1966 | Buy from Amazon |
| 4 | Madrigal | 1967 | Buy from Amazon |
| 5 | Hideaway (Short Story) | 1968 | Buy from Amazon |
| 6 | Founder Member | 1969 | Buy from Amazon |
| 7 | Traitor's Exit | 1970 | Buy from Amazon |
| 8 | The Airline Pirates | 1973 | Buy from Amazon |
| 9 | Air Apparent | 1973 | Buy from Amazon |
| 10 | The Assassination File | 1974 | Buy from Amazon |
| 11 | A Killer for a Song | 1975 | Buy from Amazon |
More series by John Gardner