At a boarding school in glamorous Palm Springs, California, alchemist Sydney must protect the vampires-in-hiding from the threat of other humans, a task made harder by forbidden romances, unexpected spirit bonds, and the threat of Strigoi moving ever closer.

As former Alchemist Marcus Finch pushes Alchemist Sydney Sage to rebel against the people who raised her, Sydney finds that breaking free is harder than she thought. There is an old and mysterious magic rooted deeply within her. And as she searches for an evil magic user targeting powerful young witches, she realizes that her only hope is to embrace her magical blood--or else she might be next.

Their forbidden romance exposed, Sydney and Adrian find themselves facing the wrath of both the Alchemists and the Moroi in this electrifying conclusion to Richelle Mead's bestselling Bloodlines series. When the life of someone they both love is put on the line, Sydney risks everything to hunt down a deadly former nemesis. Meanwhile, she and Adrian become enmeshed in a puzzle that could hold the key to a shocking secret about spirit magic, a secret...