Q:Information: - Margaret Peterson Haddix (born April 9, 1964) is an American writer known best for the two children's series, "Shadow Children" (19982006) and "The Missing" (2008-2015). She also wrote the tenth volume in "The 39 Clues", published by Scholastic. - The Missing is a series of fictional young - adult novels written by Margaret Peterson Haddix . It tells the story of famous children from history stolen by futuristic time travelers from their place in time and accidentally sent to the 21st century as babies . They are then adopted by families in the 21st century . Because Jonah is one of the stolen children , he , along with his non-adopted sister Katherine , must help return the missing kids to their rightful places in history and fix time before it is destroyed . The first book in the series , Found , was published on April 22 , 2008 . The series continued with book titles Sent , Sabotaged , Torn , Caught , Risked ( originally intended to be titled Kept ) , and Revealed . The eighth and final book , Redeemed , was released on September 8 , 2015 . There are also two ebook short stories , Sought ( which takes place before Risked ) and Rescued ( which takes place between Risked and Revealed ) . Haddix originally intended the series to consist of only seven books , however , she stated that she had trouble closing out the series in seven books ; leading to her decision to write Redeemed . - The 39 Clues is a series of adventure novels written by a collaboration of authors, including Rick Riordan, Gordon Korman, Peter Lerangis, Jude Watson, Patrick Carman, Linda Sue Park, Margaret Peterson Haddix, Roland Smith, David Baldacci, Jeff Hirsch, Natalie Standiford, C. Alexander London, Sarwat Chadda and Jenny Goebel. It consists of four series, "The Clue Hunt", "Cahills vs. Vespers", "Unstoppable", and "Doublecross". They chronicle the adventures of two siblings, Amy and Dan Cahill, who discover that their family, the Cahills, has been the most influential family in history. The first story arc concerns Dan and Amy's quest to find the 39 Clues, which are ingredients to a serum that can create the most powerful person on Earth. This series' primary audience is age 812. Since the release of the first novel, "The Maze of Bones", on September 9, 2008, the books have gained popularity, positive reception, and commercial success. , the book series has about 8.5 million copies in print and has been translated into 24 languages. The publisher of the books is Scholastic Press in the United States. Steven Spielberg acquired film rights to the series in June 2008, and a film based on the books was set to be released in 2016. The series also originated tie-in merchandise, including collectible cards and an interactive Internet game. What entity does 'the missing ' has the relation 'instance of' with?
A:
book series