For years there has been peace in the Shadowhunter world. James and Lucie Herondale, children of the famous Will and Tessa, have grown up in an idyll with their loving friends and family, listening to stories of good defeating evil and love conquering all. But everything changes when the Blackthorn and Carstairs families come to London...and so does a remorseless and inescapable plague. 

Love and lies can corrupt even the purest heart.... In the magical underworld of Victorian London, Tessa Gray finds her heart drawn more and more to Jem, while her longing for Will, despite his dark moods, continues to unsettle her. But something is changing in Will - the wall he has built around himself is crumbling. As their search for the truth leads the three friends into peril, Tessa's heart is increasingly torn, especially when one of their own betrays them.

Cordelia Carstairs seems to have everything she ever wanted. She’s engaged to marry James Herondale, the boy she has loved since childhood. She has a new life in London with her best friend, Lucie Herondale, and James’ charming companions, the Merry Thieves. She is about to be reunited with her beloved father. And she bears the sword Cortana, a legendary hero’s blade. But the truth is far grimmer.

A net of shadows begins to tighten around the Shadowhunters of the London Institute. Mortmain plans to use his Infernal Devices, an army of pitiless automatons, to destroy the them. He needs only one last item to complete his plan: he needs Tessa Gray. But can a single girl, even one who can command the power of angels, face down an entire army?

Innocent blood has been spilled on the steps of the Council Hall, the sacred stronghold of the Shadowhunters. In the wake of the tragic death of Livia Blackthorn, the Clave teeters on the brink of civil war. One fragment of the Blackthorn family flees to Los Angeles, seeking to discover the source of the disease that is destroying the race of warlocks. Meanwhile, Julian and Emma take desperate measures to put their forbidden love aside and undertake a perilous mission to Faerie to retrieve the Black Volume of the Dead.

Love is the most dangerous magic of all.... Something terrifying is waiting for Tessa Gray in London's Downworld, where vampires, warlocks and other supernatural folk stalk the gaslit streets. Tessa seeks refuge with the Shadowhunters, a band of warriors dedicated to ridding the world of demons. Tessa finds herself fascinated by and torn between two best friends.... First in the best-selling prequel series to The Mortal Instruments, set in Victorian London.

It's been five years since the events of City of Heavenly Fire that brought the Shadowhunters to the brink of oblivion. Emma Carstairs is no longer a child in mourning but a young woman bent on discovering what killed her parents and avenging her losses. Together with her parabatai, Julian Blackthorn, Emma must learn to trust her head and her heart as she investigates a demonic plot that stretches across Los Angeles, from the Sunset Strip to the enchanted sea that pounds the beaches of Santa Monica. If only her heart didn't lead her in treacherous directions....

Sebastian Morgenstern is on the move, systematically turning Shadowhunter against Shadowhunter. When one of the greatest betrayals the Nephilim have ever known is revealed, Clary, Jace, Isabelle, Simon and Alec must flee – even if their journey takes them deep into the demon realms, where no Shadowhunter has set foot before, and from which no human being has ever returned. Love will be sacrificed and lives lost in the thrilling and long-awaited final installment of the bestselling and acclaimed Mortal Instruments.

Jace is now a servant of evil, bound for all eternity to Sebastian. Only a small band of Shadowhunters believe he can be saved. To do this they must defy the Clave. And they must act without Clary. For Clary is playing a dangerous game utterly alone. The price of losing is not just her own life but Jace's soul. Clary is willing to do anything for Jace, but can she still trust him? Or is he truly lost?

Number-one New York Times best-selling author Cassandra Clare created the Mortal Instruments in 2004 with City of Bones (Simon & Schuster, 2007). Since then, the series has grown to five books, with a sixth due in 2014, and been joined by two spinoff trilogies and an upcoming film starring Jamie Campbell Power and Lily Collins. Featuring stories by Holly Black, Kendare Blake, Gwenda Bond, Sarah Rees Brennan, Rachel Caine, Sarah Cross, Kami Garcia, Michelle Hodkin, Kelly Link, Kate Milford, Diana Peterfreund, Sara Ryan, Scott Tracey, and Robin Wasserman.

Amid the chaos of war, the Shadowhunters must decide to fight with the vampires, werewolves, and other Downworlders – or against them. Meanwhile, Jace and Clary have their own decision to make: should they pursue the love they know is forbidden?

Clary Fray is seeing things: vampires in Brooklyn and werewolves in Manhattan. Irresistably drawn towards a group of sexy demon hunters, Clary encounters the dark side of New York City - and the dangers of forbidden love.

With her mother in a coma and her father hell-bent on destroying the world, Clary Fray is dragged deeper into New York City's terrifying underworld of werewolves, demons and the mysterious Shadowhunters. Discovering the truth about her past was only the beginning. Now the fate of the world rests on Clary's shoulders, but can she master her new-found powers and control her feelings for a boy who can never be hers?

A net of shadows begins to tighten around the Shadowhunters of the London Institute. Mortmain needs one last item to complete his plan. He needs Tessa. But Jem and Will, the boys who lay equal claim to Tessa's heart, will do anything to save her. 

Love and lies can corrupt even the purest heart. Tessa Gray find her heart drawn more and more to Jem, while her longing for Will, despite his dark moods, continues to unsettle her.