Stable boy Arcturus accidentally becomes Hominum's first common summoner and is whisked away to Vocans Academy, but before he can settle in he must choose a side or watch the Empire crumble.

Fletcher is put on trial by the Inquisition where he discovers his tragic origins, then is sent by the king into the Orc jungles where he and loyal friends Othello and Sylva must battle their way to the heart of Orcdom and save Hominum from destruction.

"Darkness has descended on the Shadowhunter world. Chaos and destruction overwhelm the Nephilim as Clary, Jace, Simon, and their friends band together to fight the greatest evil they have ever faced-- Clary's own brother. Nothing in this world can defeat Sebastian-- but if they journey to the realm of demons, they just might have a chance ..."-- Provided by publisher.

As tensions rise, they must stay close together and patrol the DC streets at night, seeking signs of the Harbinger, an entity that is killing Wardens and demons with no seeming rhyme or reason. Forbidden to be with each other, Zayne and Trinity fight their feelings and turn to unusual sources for help -- the demon Roth and his cohorts. But as deaths pile up and they uncover a sinister plot involving the local high school and endangering someone dear...

Twelve-year-old Aru stretches the truth to fit in at her private school, but when she is dared to prove an ancient lamp is cursed, she inadvertently frees an ancient demon.

As the Council attempts to strip Charlotte of her power, sixteen-year-old orphaned shapechanger Tessa Gray works with the London Shadowhunters to find the Magister and destroy his clockwork army, learning the secret of her own identity while investigating his past.