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.
City of Bones is the first urban fantasy book in author Cassandra Clare's "New York Times" bestselling series "The Mortal Instruments".
 The novel is set in modern day New York City and has been released in several languages, including Bulgarian, Hebrew, Polish and Japanese.
The Kingdom Keepers is a series of children's novels written by American author Ridley Pearson.
 The New York Times Bestselling series is published through Disney Editions and Disney Hyperion, and the first book was released on August 29, 2005.
 Its plot follows the adventures of five teens who, by day, are holographic hosts in the Disney Theme Parks.
 By night, they battle Disney villains to keep them from taking control of the parks, the Disney entertainment empire, and the world.
 The series' franchise also includes several other elements such as an online game and an interactive educational tour provided for school groups through Disney's Youth Education Series.
Affliction is a 2013 urban fantasy novel by Laurell K. Hamilton and is the 22nd in the "New York Times" bestselling series.
 The novel follows Anita Blake and her various lovers as she travels to Colorado and works to uncover a series of murders and infections involving flesh-eating zombies.
The Black Stallion, known as the Black or Shêtân, is the title character from author Walter Farley's bestselling series about the stallion and his young owner, Alec Ramsay.
 The series chronicles the story of an Arab sheikh's prized stallion after he comes into Alec's possession, although later books furnish the Black's backstory.
This is a list of books from the "Goosebumps" book series written by R. L. Stine and published by Scholastic.
 The first book, "Welcome to Dead House" was published in July 1992.
 Various spin-off series were written by Stine, including "Goosebumps Series 2000" (published from 1998 to 2000), "Goosebumps Gold" (which was never released), "Give Yourself Goosebumps" (1995 to 2000), "Goosebumps HorrorLand" (2008 to 2012) and Goosebumps Most Wanted (2012 to 2016).
 More than 400 million "Goosebumps" books have been sold, making it the bestselling series of all time for several years.
 At one point, "Goosebumps" sold 4 million books a month.
 A movie based on the books came out October 16, 2015.
Vampire Academy is the first out of six books in the worldwide bestselling series "Vampire Academy" by the American author Richelle Mead.
The Jessica Darling books are a "The New York Times" bestselling series of five young adult novels by Megan McCafferty, published between 2001 and 2009.
 Told from the diary-style perspective of character Jessica Darling, the series chronicles her misadventures through high school, college, and beyond.
 McCafferty also published a Jessica Darling short story called "Fifteen Going On ..." in a 2004 anthology she edited called "Sixteen: Stories About That Sweet and Bitter Birthday".
The Copernicus Legacy is a bestselling series written by Tony Abbott.
 It is about the adventures of Wade Kaplan, Darrell Kaplan, Lily, Rebecca Moore, and Roald Kaplan, to try to destroy a time machine made by Ptolemy, but discovered and used by Nicolaus Copernicus, from the dangerous Teutonic Order of Ancient Prussia.
 It currently has three books in the series, but one is in a series diverted from "The Copernicus Legacy" called "Copernicus Archives".
 While a work of fiction, it does incorporate some facts about Copernicus's history.
Last Sacrifice is the sixth book in the #1 "New York Times" bestselling series, "Vampire Academy" by Richelle Mead.
 It is the last book in the original storyline, but Mead will continue writing more "Vampire Academy" books in a spinoff series.

Question: City of Bones  is a part of the bestselling series, the last of which was published when
Answer: May 27, 2014