After the 1979 court battle in which Grosset & Dunlap lost the rights to publish any new Nancy Drew tales, Simon & Schuster started publishing new stories in paperback format, commonly called the Digests, first under the Wanderer imprint (volumes 57-79) and then under the Minstrel imprint. Beginning with volume 164, The Mystery of the Mother Wolf, in January 2002, new Digests were released under Simon & Schuster's Alladin imprint, with some older volumes being reprinted under this imprint. The Digest series ended in 2003 and was replaced by Nancy Drew Girl Detective in 2004
The Girl Detective series, written in the first person style (by Nancy), updated the series and ran to 47 volumes, ending in 2012 but not before creating several spin-off series: Girl Detective Super Mystery (3 volumes 2005-2007); Drew-Hardy Super Mystery (4 volumes 2007-2010); Girl Detective Graphic Novels (21 volumes 2005-2010) and the Case Files Graphic Novels (3 volumes 2010-2011). In 2013 the series was replaced by the Nancy Drew Diaries series.
The Nancy Drew Diaries, once again narrarated by Nancy, continues along the same lines as the Girl Detective series.
Plans were made to introduce Nancy Drew to a younger demographic, thus precipitating the Notebooks Series (69 volumes 1994-2005), which was replaced by the Clue Crew series in 2006 (40 volumes to date). Both series had an eight year-old Nancy along with Bess and George solving gentle, simple mysteries. The Clue Crew series had a spin-off Clue Crew Graphic Novel series starting in 2012. Beginning in 2015, the Clue Book series featuring Nancy and her pals in an all-new, interactive chapter book series replaced the Clue Crew..
It was decided to introduce a more mature Nancy to a slightly older teen audience which led to the Nancy Drew Files series (124 volumes 1986-1997), the Nancy Drew-Hardy Boys Super Mystery series (36 volumes 1988-1998). The Files stories had mature themes dealing with serious crimes, even murder. In the Super Mystery series Nancy teams up with the Hardy Boys with plot lines similar to those of the Files series.
The Nancy Drew On Campus series (25 volumes 1995-1998) finds a more mature Nancy off at Wilder University along with Bess and George. There's new romantic entanglements for all of them, with Nancy breaking up with Ned! Nancy also keeps busy with a job as a reporter on the college newspaper, The Wilder Times.
The Nancy Drew-Hardy Boys Be A Detective series (6 volumes 1984-1985) are mysteries in which the reader controls the outcome of the story by choosing different options of advancing the plot. Carolyn Keene and Franklin W. Dixon are listed as co-authors and each book contains a forward by them.
Other than a cameo appearance in the first volume, Nancy herself doesn't appear in the River Heights series (17 volumes 1989-1992) of romantic adventures taking place in and around her home town of River Heights.