Twin sisters Lia and Alice Milthorpe have just become orphans. They have also become enemies. In late nineteenth-century New York state, wealthy sixteen-year-old twin sisters Lia and Alice Milthorpe find that they are on opposite sides of an ancient prophecy that has destroyed their parents and seeks to do even more harm.

While grieving following an unexpected family tragedy, Rose Darrow finds her quiet world turned upside down when Bodhi Lowell is hired to spend the summer working on her family's farm.

In 1891 London, sixteen-year-old orphan Lia Milthorpe continues her quest to end an ancient prophecy requiring her to search for missing pages and human"keys" and develop her powers for an inevitable final confrontation with her twin sister Alice.

After seeing her parents murdered, sixteen-year-old Helen Cartwright learns she is one of three remaining angelic descendents charged with protecting the world, but nothing can save her from being torn between new friend and fellow Keeper Griffin and childhood friend Raum, who has joined forces with her parents' killers.