On the Midwinter Day that is his eleventh birthday, Will Stanton discovers a special gift -- that he is the last of the Old Ones, immortals dedicated to keeping the world from domination by the forces of evil, the Dark. At once, he is plunged into a quest for the six magical Signs that will one day aid the Old Ones in the final battle between the Dark and the Light. And for the twelve days of Christmas, while the Dark is rising, life for Will is full...

Jane's invitation to witness the making of the Greenwitch begins a series of sinister events in which she and her two brothers help the Old Ones recover the grail stolen by the Dark.

"Shadowhunter Emma Carstairs and her parabatai Julian Blackthorn race to stop a demonic plot that threatens Los Angeles"--