While travelling the California coast visiting historic missions, Connor Hawthorne and her partner, Laura Nez, are unwittingly thrust into the middle of an age-old conflict as they help investigate what may be terrorist threats against nuclear power plants. Soon neck deep in a mystery that the Vatican will do anything to suppress, the two women are forced deep into a battle between two secret societies: one a ruthless organisation whose members are sworn to search out and silence the heretics who are their enemies; the other, a band of mystics whose magical abilities and unswerving loyalty to the Holy Mother are their only weapons in preserving the one sacred relic that could rewrite history. Featuring the rich cast of unforgettable characters from the first two Connor Hawthorne mysteries, this third instalment will thrill Maddison's already strong fan base and new readers alike.