Question: How many series does have the adventure novels who's first novel is The Maze of Bones?

<P0-S0> The Maze of Bones is the first novel of The 39 Clues series, written by Rick Riordan and published September 9, 2008 by Scholastic. <P0-S1>  It stars Amy and Dan Cahill, two orphans who discover, upon their grandmother Grace's death, that they are part of the powerful Cahill family, whose members constantly fight each other for Clues, which are ingredients to a mysterious serum. <P0-S2>  The novel has received generally positive reviews. <SEP> <P1-S0> A・C・G・T is a Japanese animation production company, founded in 2001 by former Triangle Staff members. <P1-S1>  It has been involved in the development of many series, predominantly contributing to other studios and adapting works based on light novels and manga. <P1-S2>  It is a subsidiary of OB Planning, who handles executive production on many of its series. <P1-S3>  A.C.G.T also works regularly with Genco, who at times provides executive production while A.C.G.T completes animation production. <SEP> <P2-S0> Emilia Marryat (later Emilia Marryat Norris; 1835? <P2-S1> –1875) was a British author. <P2-S2>  The daughter of author Capt. Frederick Marryat and his wife Catherine, she was known as a children's author who wrote adventure novels infused with moral lessons in the style of her father. <P2-S3>  Some of her novels, including "Amongst the Maoris" (1874), are set in the Pacific and New Zealand. <P2-S4>  "Amongst the Maoris" is the first novel to take the Waikato region of New Zealand's North Island as a setting. <P2-S5>  Though two of her novels have Australian content, she is not known to have ever visited the country. <SEP> <P3-S0>  It consists of five series, "The Clue Hunt", "Cahills vs. Vespers", "Unstoppable", "Doublecross", and recently released, "Superspecial". <P3-S1>  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. <P3-S2>  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. <P3-S3>  This series' primary audience is age 8–12. <P3-S4>  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. <P3-S5>  s of 2010 , the book series has about 8.5 million copies in print and has been translated into 24 languages. <P3-S6>  The publisher of the books is Scholastic Press in the United States. <P3-S7>  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 but production has not yet started as of August 2017. <P3-S8> 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. <P3-S9>  The series also originated tie-in merchandise, including collectible cards and an interactive Internet game.