Karen - among the many other "time-waster" books I read, I'm particularly fond of the series from Douglas Preston and Lincoln Child featuring a character called Agent Pendergast of the FBI. It starts off with the book "The Relic" (which got turned into a B-movie) and continues with the sequel, "The Reliquary". But it really got going with "Cabinet of Curiosities" and "Still Life with Crows".

The storyline is currently in a trilogy called "The Pendergast Trilogy" starting with "Brimstone".

Masaki