Love, duty, and danger collide in Edwardian London, as the Shadowhunters face the greatest threat they have ever known.

Marianne's parents have finally split up; and her mother has checked herself into the hospital. Marianne's own life hasn't been the same since she quit dancing. Then she start losing time, doing things she would never do. And objects around her seem to break whenever she comes close. Something is after her ... and the only one who seems to believe her is the daughter of a local psychic. When their first attempt at an exorcism calls down the full force...

What price is too high to pay, even for love? When Jace and Clary meet again, Clary is horrified to discover that the demon Lilith's magic has bound her beloved Jace together with her evil brother Sebastian, and that Jace has become a servant of evil. The Clave is out to destroy Sebastian, but there is no way to harm one boy without destroying the other. As Alec, Magnus, Simon, and Isabelle wheedle and bargain with Seelies, demons, and the merciless...

Forbidden from practicing magic and burdened by her responsibilities, Jin Zhara's life takes an unexpected turn when she becomes involved with the Guardians of Dawn, a group dedicated to fighting a demonic plague that is corrupting magicians.

In this thrilling conclusion to the Harbinger trilogy, Trinity, who is out of options, brings Lucifer back to the world to fight the Harbinger, a decision that carries disastrous consequences with it. Even with both demons and Wardens on her side, Trinity Morrow may not win the war against the Harbinger. Bringing Lucifer back to the world to fight the Harbinger is probably a really, really bad idea, but the world's ultimate fallen angel is the only...