| #2 |  Spartan Gold
| 3 | 12 reads | |
| #3 |  Lost Empire
| 3.5 | 2 reads | |
| #4 |  The Kingdom
| 3.67 | 3 reads | |
| #5 |  The Tombs
| 2.67 | 3 reads | |
| #6 |  The Mayan secrets
| 3.5 | 2 reads | |
| #7 |  The eye of heaven
| 3 | 2 reads | |
| #8 |  The Solomon Curse
| 4 | 3 reads | |
| #9 |  Pirate
| 3.5 | 3 reads | |
| #10 |  The Romanov Ransom
| 3 | 3 reads | |
| #11 |  The Gray Ghost
| 3.33 | 3 reads | |
| #12 |  The Oracle
| 4 | 1 read | |
| #13 |  Wrath of Poseidon
| 4 | 3 reads |
