The Sign of the Sinister Sorcerer

Holes

Flight of the Outcast: The Academy, Year 1

The Whistle, the Grave, and the Ghost

The House Where Nobody Lived

The Doom of the Haunted Opera: A Lewis Barnavelt Book

The Ghost in the Mirror

Moon Rising (Wings of Fire #6)

The Beast Under the Wizard's Bridge

Escaping Peril (Wings of Fire #8)

The Vengeance of the Witch-Finder

Winter Turning (Wings of Fire #7)

The Tower at the End of the World

The Brightest Night (Wings of Fire #5)

Heart of Steele