Vatican Secret Archive Thrillers

12 titles

1. 1. The Vivaldi Cipher
2. 2. The Opus Dictum
3. 3. The Petrus Prophecy
4. 4. The Avignon Affair
5. 5. The Jerusalem Scrolls
6. 6. The Galileo Gambit
7. 7. The Confessions of Pope Joan
8. 8. The Celestial Guardian
9. 10. The Hildegard Seeds
10. 11. The Voynich Codex
11. 12. The Medici Heresy
12. 13. The Borgia Vigil