Question: City of Fallen Angels is the fourth book in "The Mortal Instruments" series by whom?
Context: Fallen Angels is a 1988 young-adult novel written by Walter Dean Myers, about the Vietnam War.  It won the 1988 Coretta Scott King Award.  "Fallen Angels" is listed as number 16 in the American Library Association's list of 100 most frequently challenged books of 1990–2000 due to its use of profanity and realistic depiction of the war. The Mortal Instruments is a series of six young adult fantasy novels written by Cassandra Clare, the last of which was published May 27, 2014.  "The Mortal Instruments" is chronologically the third series of a proposed five in "The Shadowhunter Chronicles" but it was the first one published.  It follows Clary Fray (who interacts with a group of nephilim known as Shadowhunters) while also discovering her own half-angel heritage.  The Shadowhunters protect the world of mundane people who are also called "mundies" from dark forces from beyond their world. The Infernal Devices is a series of novels by author Cassandra Clare, centering on a race called the Shadowhunters introduced in her "The Mortal Instruments" series.  The series is a prequel series to the "Mortal Instruments" series, and contains some of the character's ancestors.  Clare has insisted that the two series can be read in either order. City of Fallen Angels is the fourth book in "The Mortal Instruments" series by Cassandra Clare.  The series was meant to end with "City of Glass"; it was announced in March 2010 that a fourth book would be added, with Cassandra Clare later saying that she views this as a "second trilogy" in the series.  The book was released on April 5, 2011. Bezaliel (also Busasejal, Basasael), Aramaic ניאל (damaged), Greek Θωνιήλ (damaged), was the 13th Watcher of the 20 leaders of the 200 fallen angels that are mentioned in an ancient work called the Book of Enoch.  This angel is probably one of the most controversial of the list of fallen angels in the Book of Enoch.  He is often left off the list of angels from chapter 6 as a result of the problematic transmission of the text.  The R. H. Charles translation from 1917 does not include him on the list of 20 leaders.  Michael Knibb says as of 1982 there were various translations of the name all with different names and meanings.  The name Bezaliel (Shadow of God) is taken from chapter 69 and is the 13th angel listed there. The Mortal Instruments: City of Bones is a 2013 Canadian-German urban fantasy action-adventure film based on the first book of "The Mortal Instruments" series by Cassandra Clare.  The story takes place in an urban and contemporary New York City.  Directed by Harald Zwart, the film stars an international cast, including Lily Collins, Jamie Campbell Bower, Robert Sheehan, Kevin Zegers, Jemima West, Godfrey Gao, Lena Headey, Jonathan Rhys Meyers, Aidan Turner, Kevin Durand, and Jared Harris.  It was released in theaters on August 21, 2013, by Screen Gems in the United States and Entertainment One in the United Kingdom.  "The Mortal Instruments: City of Bones" earned $91 million against a $60 million production budget.  "The Mortal Instruments: City of Bones" was released on DVD and Blu-ray on December 3, 2013, by Sony Pictures Home Entertainment. Rias Gremory (リアス・グレモリー , Riasu Guremorī ) is a fictional character who appears in the light novel, anime, and manga series "High School DxD" authored by Ichiei Ishibumi.  Rias is the main love interest of the protagonist, Issei Hyodo.  Rias is a high school student at Kuoh Academy, which, unbeknownst to most students, contains angels, devils, and fallen angels as part of its student population.  "High School DxD" is set in a world where there is constant battle between these three main factions (angels, devils, fallen angels), though the war has died down as of late, and many famous angels and devils have already ceased to exist. "Fallen Angels" is the third single by the American rock band, Black Veil Brides, and the first single from their second album "Set the World on Fire".  The song is inspired by the biblical story told in the Book of Revelation, Chapter 12, in which Satan and one-third of God's angels rebelled against God, starting a war in Heaven and were therefore cast out of Heaven to the earth, becoming "fallen angels." The story was introduced to Andy Biersack and the Black Veil Brides by their band artist Richard Villa: This is a list of the main characters from "The Mortal Instruments" series by Cassandra Clare, including the novels "City of Bones", "City of Ashes", "City of Glass", "City of Fallen Angels", "City of Lost Souls", and "City of Heavenly Fire" Fallen Angels: Six Noir Tales Told for Television is a 1993 anthology, published by Grove Press as a tie-in to the Showtime television series "Fallen Angels" that appeared in the fall of 1993.
Answer: Cassandra Clare