When the life of someone they both love is put on the line, Sydney risks everything to hunt down a deadly former nemesis. Meanwhile, Adrian becomes enmeshed in a puzzle that could hold the key to a shocking secret about spirit magic, a secret that could shake the entire Moroi world.

After making the shocking decision that changed her whole life, Sydney still finds herself pulled in too many directions. Her sister Zoe has arrived, and while Sydney longs to grow closer to her, there's still so much she must keep secret. Sydney must tread a careful path as she harnesses her powerful magical ability to destroy everything about the way of life she was raised to defend. Consumed by passion and the burning desire for revenge, Sydney struggles to keep her secret life under wraps as the dangerous threat of exposure looms larger than ever.

Sydney Sage is an Alchemist, one of a group of humans who dabble in magic and serve to bridge the worlds of humans and vampires. They protect vampire secrets - and human lives. In the aftermath of a forbidden moment that rocked Sydney to her core, she finds herself struggling to draw the line between her Alchemist teachings and what her heart is urging her to do. Then she meets alluring, rebellious Marcus Finch - a former Alchemist who escaped against all odds, and is now on the run.

Sydney Sage is an Alchemist, one of a group of humans who dabble in magic and serve to bridge the worlds of humans and vampires. They protect vampire secrets - and human lives. After their secret romance is exposed, Sydney and Adrian find themselves facing the wrath of both the Alchemists and the Moroi in this electrifying conclusion to Richelle Mead's New York Times best-selling Bloodlines series.

Sydney Sage is an alchemist, one of a group of humans who dabble in magic and serve to bridge the worlds of humans and vampires. They protect vampire secrets - and human lives. In the Indigo Spell, Sydney was torn between the alchemist way of life and what her heart and gut were telling her to do. And in one breathtaking moment that Richelle Mead fans will never forget, she made a decision that shocked even her...But the struggle isn't over for Sydney. As she navigates the aftermath of her life-changing decision, she still finds herself pulled in too many directions at once.