The ninja librarians : the accidental keyhand (Ninja librarians #01)
by Downey, Jen Swann (Author)
Series
Summary
Dorrie and her brother Marcus accidently open a portal to Petrarch's Library, where they discover a secret society of warrior librarians who travel in time, protecting the world's greatest thinkers from torture and death for sharing knowledge and ideas. Full description
Series: Ninja librarians
The accidental keyhand (Volume 1.)
Sword in the stacks (Volume 2.)