How many Return to the Library of Doom books are there?

There are 2 books in the Return to the Library of Doom series by Michael Dahl, for ages 8-13.

Return to the Library of Doom Books in Order

2 books · Ages 8–13 · Graphic Novels

Return to the Library of Doom is a 2-book series for ages 8–13 by Michael Dahl. Each book stands alone — start anywhere.

Start anywhere — each book stands alone.

That said, Ghost Writer and Zombie in the Library are great first picks.

No particular order needed — browse and pick what catches your eye.