book cover of The Mystery of the 99 Steps by Carolyn Keene

The Mystery of the 99 Steps

detective fiction by Carolyn Keene

Blurb

The Mystery of the 99 Steps is the forty-third volume in the Nancy Drew Mystery Stories series. It was first published in 1966 under the pseudonym Carolyn Keene. The actual author was ghostwriter Harriet Stratemeyer Adams.

First Published

1966

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