History and mystery, but not much more... 

FICTION: 

The Charlemagne Pursuit (Cotton Malone Series #4)
By Steve Berry

In his latest Cotton Malone adventure, Steve Berry integrates such elements as Charlemagne, Nazis, ancient manuscripts, historical puzzles, and scientific surprises into a plot that gets underway with Malone searching for answers about his father, Capt. Forrest Malone, after learning that instead of dying in 1971 in a nuclear sub accident in the North Atlantic, dad actually died while on a secret submarine mission to the Antarctic.

Scarpetta (Kay Scarpetta Series #16)
By Patricia Cornwell

When Kay Scarpetta has left her private forensic pathology practice in Charleston, South Carolina, she accepts an assignment in New York City, where the NYPD has asked her to examine an injured man on Bellevue Hospital’s psychiatric prison ward. As the handcuffed and chained patient begins to tell his vivid and graphic tale of paranoia, torture, and murder, an inexplicable and horrifying truth emerges: Whoever is committing the crimes knows where his prey is at all times. Is it a person, a government? And what is the connection between the victims?

Cruel Intent (Ali Reynolds Series #4)
By J.A. Jance

When a homicidal computer hacker — with more revenge than romance on his mind — tampers with the no-strings dating site singleatheart.com, former TV newscaster Ali Reynolds finds her home remodeling project interrupted. Murder comes calling, one that implicates her contractor in his wife’s murder. Convinced of his innocence, Ali unwittingly puts herself directly in the path of a scheming murderer. In a world filled with encrypted computer traps and life-threatening lies, will Ali be able to decode the actions of a serial killer determined to destroy women - before he uses his wicked website to find her?

Lion in the Valley (Amelia Peabody Series #4)
By Elizabeth Peters

As Elizabeth Peters, Barbara Mertz — who used her Ph.D. in Egyptology to publish early nonfiction works about life in ancient Egypt — has authored books in three different series, most notably a sequence of mysteries set in 19th-century Egypt, featuring the intrepid archeologist/sleuth Amelia Peabody. In the fourth entry of the Lion in the Valley series the burial chamber of the Black Pyramid in Dahshoor promises to be Amelia’s — along with her Egyptologist husband Emerson and their precocious eight-year-old son Ramses — for the digging. But evil only begins to ensue with the blatant abduction of Ramses by her arch nemesis the Master Criminal, notorious looter of the living and the dead.