James Rollins' Sigma Force books are a combination of high action, science (and history), and great characters. I loved Benji (on the low end of the Spectrum) as well as the other new characters, heroes heroine, and villains... The subject matter of plague is fascinating and I can count on the reliable satisfying ending. I also loved the setting of central Congo. Thank you, Mr. Rollins. I'll be back in your universe again soon.
I am now about to start The Water Dancer, set in this country during slavery, a subject I return to again and again. The book has great reviews.