After a distinguished scientist dies under suspicious circumstances at an archaeological dig in Tuscany, Darren Priest and Alana Weber are called in to investigate. They discover that the now-deceased scientist's work was focused on Italy's earliest history and the possible connection to the mysterious Etruscan people. 

An assassin sent by Arma Dei disappears into the night, with him a collection of heretical art and writings. For five centuries, the satchel—containing sketches and writings by Leonardo da Vinci, Michelangelo and many others—is pursued by kings, popes, princes, and scavengers. The Paletti notebook lives on through rumor and legend, which also suggest that it contains the infamous Gospel of Matthias, thought to be lost forever.

When Amber Young, a quiet, brilliant newspaper puzzle editor, detects a hidden cypher, she realizes a serial killer is leaving clues hidden in plain sight. The FBI’s BAU unit needs Amber’s unique genius to help them decode the mystery and catch a killer before it’s too late, and in this propulsive cat-and-mouse thriller, it’s a battle of clues, riddles, twists—and genius.

Recently widowed Agnes Lockwood is spending a few days on Tyneside in Northeast England, catching up with her past. When expensive jewelry is stolen at the hotel, Chief Inspector Alan Johnson gets on the case. After Alan recognizes Agnes as a friend from schooldays, they rekindle their friendship and Agnes bombards him with questions about the case. But after dinner one evening, they find a body lying on the roadside. Fearing for her safety, Alan warns Agnes to stay away from the case. But being an inquisitive woman, Agnes cannot resist getting involved...too involved.

When collegiate baseball phenom Chase Fulton suffers a freak injury on the field that shatters his dreams of becoming a Major League catcher, his future looks bleak until he’s recruited into quasi-governmental covert operations, where his training as an assassin and covert intelligence operative launches him into a world fraught with danger, intrigue, and unexpected passion.