When the 2007 film was released, a non-canon novelization of the movie was written to look like the older books. A new book was written for each of the "Girl Detective" and "Clue Crew" series, both of which deal with a mystery on a movie set. In 2008, the "Girl Detective" series was re-branded into trilogies with a model on the cover. These mysteries became deeper, with the mystery often spread across three books, and multiple culprits. These trilogies also met with negative fan reception due to Nancy's constant mistakes, shortness of the books, and lack of action. With the new trilogy format, sales began slipping. In 2010, Simon & Schuster then cut back from six "Nancy Drew" books per year, to four books per year. In December 2011, they finally announced that the series was cancelled along with the Hardy Boys "Undercover Brothers" series.