The character of Nancy Drew – ghost written and credited to the pseudonymous Carolyn Keene – has appeared in a number of series over the years.
The first and longest-running of these is the Nancy Drew Mystery Stories series, begun in 1930 and ended in 2003.
The first spin-off series, Nancy Drew Files, was begun in 1986. Since then, Nancy Drew has appeared in a number of other series and books, including a number of spin-offs where she investigates with the Hardy Boys.
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