| A thick carapace | Enigma 02 |
|---|---|
| Heading North | Enigma 04 |
| The Island of Flowers | Enigma 03 |
| The Guatemalan Getaway | Enigma 04 |
| A Night at the Harbour | Enigma 01 |
| The Lost Rock | Enigma 02 |
| The Lighthouse Island | Enigma 03 |
| Jack Rackham or the Return of Billy Bones | Enigma 01 |