| #2 |  Spartan Gold
| 3.23 | 19 reads | |
| #3 |  Lost Empire
| 3.86 | 8 reads | |
| #4 |  The Kingdom
| 3.5 | 8 reads | |
| #5 |  The Tombs
| 3.29 | 7 reads | |
| #6 |  The Mayan Secrets
| 3.8 | 5 reads | |
| #7 |  The Eye of Heaven
| 3.5 | 5 reads | |
| #8 |  The Solomon Curse
| 4 | 5 reads | |
| #9 |  Pirate
| 3.75 | 5 reads | |
| #10 |  The Romanov Ransom
| 3.4 | 5 reads | |
| #11 |  The Gray Ghost
| 3.5 | 4 reads | |
| #12 |  The Oracle
| 4 | 2 reads | |
| #13 |  Wrath of Poseidon
| 4.17 | 5 reads |