Setting: NYC, the Hamptons, Italy, Tibet, you name it
Bold type indicates a book I've read.
1. Relic (1995)
2. Reliquary (1997)
3. The Cabinet of Curiosities (2002)
4. Still Life with Crows (2003)
The following three books make up the "Diogenes Trilogy":
5. Brimstone (2004)
6. Dance of Death (2005)
7. The Book of the Dead (2006)
9. Cemetery Dance (2009)
10. Fever Dream (2010)
11. Cold Vengeance (2011)
12. Two Graves (2012)
"Extraction" (2012) [short story featuring Agent Pendergast, available only as an ebook and audio download]
13. White Fire (2013)
14. Blue Labyrinth (2014)
15. Crimson Shore (2015)
16. The Obsidian Chamber (2016)
17. City of Endless Night (2018)
18. Verses for the Dead (2018)
19. Crooked River (2020)
20. Bloodless (2021)
21. The Cabinet of Dr. Leng (2023)