Christopher Cool: TEEN Agent (Jack Lancer)
Hardy Boys-style adventures featuring teenage agents Christopher Cool and Geronimo Johnson.
| Title | Author | Year | |
|---|---|---|---|
| 1. | X Marks the Spy | Lancer | 1967 |
| 2. | Mission: Moonfire | Lancer | 1967 |
| 3. | Department of Danger | Lancer | 1967 |
| 4. | Ace of Shadows | Lancer | 1968 |
| 5. | Heads You Lose | Lancer | 1968 |
| 6. | Trial by Fury | Lancer | 1969 |