Fifteen-year-old Billi SanGreal has grown up knowing that being a member of the Knights Templar puts her in danger, but if she is to save London from catastrophe she must make sacrifices greater than she imagined.
As the youngest and only female member of the Knights Templar, Bilquis SanGreal grew up knowing she wasn't normal. Instead of hanging out at the mall or going on dates, she spends her time training as a soldier in her order's ancient battle against the Unholy. Billi's cloistered life is blasted apart when her childhood friend, Kay, returns from Jerusalem, gorgeous and with a dangerous chip on his shoulder. He's ready to reclaim his place in Billi's life, but she's met someone new: amber-eyed Michael, who seems to understand her like no one else, effortlessly claiming a stake in her heart.But the Templars are called to duty before Billi can enjoy the pleasant new twist to her life. One of the order's ancient enemies has resurfaced, searching for a treasure that the Templars have protected for hundreds of years -- a cursed mirror powerful enough to kill all of London's firstborn. To save her city from catastrophe, Billi will have to put her heart aside and make sacrifices greater than any of the Templars could have imagined.