Cassandra Clare

"A new fantasy series in which two outcasts find themselves caught in a web of forbidden love, dangerous magic, and dark secrets that could change the world forever. In the vibrant city-state of Castellane, the richest of nobles and the most debauched of criminals have one thing in common: the constant search for wealth, power, and the next hedonistic thrill. Kel is an orphan, stolen from the life he knew to become the Sword Catcher--the body double...

Cordelia Carstairs, a Shadowhunter trained to battle demons, travels with her brother to London where they reconnect with childhood friends but soon must face devastating demon attacks in the quarantined city. Edwardian London, a time of electric lights and long shadows-- with demons waiting in the dark. For years there has been peace in the Shadowhunter world. James and Lucie Herondale have listened to stories of good defeating evil and love conquering...

Clary Fray just wishes that her life would go back to normal. But what's normal when you're a demon-slaying Shadowhunter, your mother is in a magically induced coma, and you can suddenly see Downworlders like werewolves, vampires, and faeries? If Clary left the world of the Shadowhunters behind, it would mean more time with her best friend, Simon, who's becoming more than a friend. But the Shadowhunting world isn't ready to let her go -- especially...

"Shadowhunter Emma Carstairs and her parabatai Julian Blackthorn race to stop a demonic plot that threatens Los Angeles"--

Valentine has the Mortal Instruments and is ready to wreak havoc on everyone -- Shadowhunter and Downworlder -- but many in the Clave aren't willing to fight him if it means teaming up with the supernatural beasts they're used to hunting. Clary has to use her new rune-creation ability to convince them that working together is their only hope for a future.