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.

Twelve-year-old Jade Society member Faryn Liu may be destined to command the Jade Emperor's army of demon-fighting dragons, but first she must complete a daring quest across San Francisco's Chinatown before the Lunar New Year.

Emma is torn between her passion for Julian and her need to protect him from the consequences of a forbidden romantic partnership, a situation challenged by her relationship with Mark and his efforts to regain his Shadowhunter capabilities.

"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...

Pinki, a young rakkhosh fire demon, does not want to lead the resistance against the Serpentine overlords, and she certainly does not want to be chosen rakkhosh queen, but somehow she finds herself wearing the crown of flames, with all the responsibilities and possibilities that come with it.

"In 1812, Lady Helen, taking refuge for the summer in Brighton, learns the Dark Days Club has a secret mission for her"--

Once again, Artemis will have to pair up with his old comrade, Captain Holly Short, to track down the missing demon and rescue him before the time spell dissolves and the lost demon colony returns violently to Earth.

"Pinki hails from a long line of rakkhosh resisters, demons who have spent years building interspecies relationships, working together to achieve their goal of overthrowing the snakey oppressors and taking back their rights. But she has more important things to worry about, like maintaining her status as fiercest rakkhosh in her class and looking after her little cousins. There is also the teeny tiny detail of not yet being able to control her fire...

When seventeen-year-old orphaned shapechanger Tessa Gray is kidnapped by the villainous Mortmain in his final bid for power, the London Institute rallies to save her, but is beset by danger and betrayal at every turn.

Carson High seniors Scott and Davey don't have much common ground that is, until all universes begin collapsing into their school. Soon, the avowed loner and the mean girl cheerleader realize that something is very wrong, and they're the only two who are aware of what's happening. Demon versions of their teachers roam the halls, a cowboy sloth appears sporadically, and some students randomly burst into flames, while angry inter dimensional counterparts...