Cassandra Clare

Cassandra Clare, is an American author of young adult fiction, best known for her bestselling series The Mortal Instruments.

Personal life
Clare was born Judith Rumelt, to American parents, in Tehran, Iran. Her parents are Elizabeth and Richard Rumelt, who are a business school professor and author, respectively. Her maternal grandfather was film producer Max Rosenberg. Clare is Jewish, and has described her family as "not religious".

Clare is credited by her publisher with creating the "City of Fallen Angels treatment" where a tangible "letter" from one character to another is attached to the back of physical copies of a book. The goal is to spur print book sales.

The Mortal Instruments series
In 2004, Clare started working on her first-published novel, City of Bones, inspired by the urban landscape of Manhattan. City of Bones was released by Simon & Schuster in 2007 and is a contemporary fantasy story revolving around characters Clary Fray, Jace Wayland, and Simon Lewis, which became a New York Timesbestseller upon its release. City of Ashes and City of Glass completed the first trilogy. A subsequent second trilogy contained three more books: City of Fallen Angels, City of Lost Souls, and City of Heavenly Fire.

There is a prequel trilogy called The Infernal Devices, which is set in the same universe as The Mortal Instruments, but set in the Victorian era. This consisting of three books: Clockwork Angel, published on August 31, 2010, Clockwork Prince, published on December 6, 2011, and Clockwork Princess, published on March 19, 2013.

A fourth trilogy set in this universe was announced in 2012, to be collectively known as The Dark Artifices. The new contemporary series is set in Los Angeles, and follow female shadowhunter Emma Carstairs, who was introduced in City of Heavenly Fire. The first book, Lady Midnight, was released in March 2016; the second, Lord of Shadows was released in April 2017; the third, Queen of Air and Darkness will be released on December 4, 2018.