Shadowhunters and Doorlders: A Mortal Instruments Reader by Cassandra Clare (Editor), Holly Black ), Kate Milford , Diana Peterfreund , Sara Ryan , Scott Tracey , Robin Wasserman , Kendare Blake , Gwenda Bond , Sarah Rees Brennan , Rachel Caine , Sarah Cross , Kami Garcia , Michelle Hodkin , Kelly Link Cassandra Clare’s Mortal Instruined world of shadowhunters, vainations and loyalty of hundreds of thousands of YA readers Originally a trilogy (City of Bones, City of Ashes, City of Glass), the series has extended to six titles, plus a prequel trilogy, the Infernal Devices, and a planned sequel series, the Dark Artifices A feature film is planned for 2013 Shadowhunters and Doorlders, edited by Clare (who provides an introduction to the book and to each piece), is a collection of YA authors writing about the series and its world