Azriel Moshe, the head of an inter-disciplinary team of scholars investigating the Kabbalah, has been murdered. The only clue found is a strange mark Moshe left on the floor, written in his own blood. Which of Moshe's colleagues is the murderer? Was it his spurned lover Svetlana Pagetsky, the beautiful Russian historian? The vivacious Krista Scelba, a brilliant sociologist with a secret obsession? Or perhaps it was Leon Gerhard, Moshe's jealous archrival? To solve the mystery, Solomon Hunter must first understand the Jewish tradition of the Kabbalah. What is it? How does the Zohar fit in? And what is the strange symbol that Moshe scrawled on the floor? Join San Francisco Police Detective Solomon Hunter as he investigates this perfectly staged murder and unravels the secrets of the Kabbalah along the way.