The Last Olympian
Rick Riordan
Percy Jackson and the Olympians (5)
Mockingjay
Suzanne Collins
The Hunger Games (3)
The Tower of Nero
The Trials of Apollo (5)
The Sea of Monsters
Percy Jackson and the Olympians (2)
So Long, and Thanks for All the Fish
Douglas Adams
The Hitchhiker's Guide to the Galaxy (4)
The Restaurant at the End of the Universe
The Hitchhiker's Guide to the Galaxy (2)
And Another Thing...
Eoin Colfer & Douglas Adams
The Hitchhiker's Guide to the Galaxy (6)