The Guardians of History — Elisabetta Cametti

As the general manager of 9Sense Publishing, one of the most powerful publishers in the world, Katherine Sinclaire is used to high-stakes intrigue.

But she faces a new kind of trouble when she receives an urgent call from 9Sense CEO Bruce Aron. Arriving at his office, Katherine discovers a gruesome sight: Bruce's fatally wounded body, seemingly done in by his own hand. She also finds that her mentor has left a flash drive labeled with his nickname for her. It's the first in a series of increasingly confounding clues that will lead Katherine from London to Lake Bolsena, a site of archeological mystery set deep on a secluded Italian island. There, with the help of Bruce's old friend, enigmatic financier Jethro Blake, Katherine uncovers a startling secret.

Now, caught in the middle of a dark and dangerous game, Katherine and Jethro must delve into the heart of an ancient civilization and expose a conspiracy long buried by history. Can she stop a thousand-year-old plot -- before its bloody final rite is carried out?