Mallory Kass
Mallory Kass has written at least 1 book. Their most popular book is The Black Book of Buried Secrets with 4 saves with an average rating of 5⭐.
Series
11 primary books12 released booksAuthored 4% of series
The 39 Clues
The 39 Clues is a 12-book series with 11 primary works first released in 2008 with contributions by Rick Riordan, Gordon Korman, and 6 others.
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