On her fourteenth Halloween, Lizzy Mortimer sees her first death-specter.
Confused at first, Lizzy soon learns from her grandmother Bizzy that as Death Catchers, they must prevent fate from taking its course when an unjust death is planned-a mission that has been passed down from their ancestor, Morgan le Fay. Only, Lizzy doesn't expect one of her first cases to land her in the middle of a feud older than time between Morgan le Fay and her sister Vivienne le Mort. Vivienne hopes to hasten the end of the world by preventing Lizzy from saving King Arthur's last descendant-humanity's greatest hope for survival. It's up to Lizzy, as Morgan's earthly advocate, to outwit fate before it's too late.