[Cynner]

Preston and Child are pretty good. Relic and the sequel were pretty good, but they were centered around some biological items -I'm a Bio major so it might not be your cup of tea. A good place to start is the Cabinet of Curiosities. The books are sequential but aren't sequels. The Characters continue and it helps if you are familiar with them. A note though, if its not an Agent Pendergast novel then their work tends away from Horror/Thriller and more toward Critcheon-esqe Techno-thrillers. Here's a list of the latter...

Thunderhead
The Ice Limit
Rip Tide

Cynner

ETA: The biology of Relic and Reliquary is part fantasy and partly fictionalize realism, but I didn't have the course work back then to realize it was.