HellfightersBook - 2016
"Fifteen-year-old Marlow understands that their former leader must be stopped from using the two Devil's Engines in his control to open the gates of hell--something Boyd cannot do until he discovers the location of a mythical third machine. Marlow and Pan must take up this deadly duel with an all-powerful enemy that seems utterly impossible to win"--Provided by publisher.
Publisher: New York : Farrar, Straus and Giroux, ©2016.
Characteristics: 312 pages ;,22 cm