Sea spell /
Jennifer Donnelly.
- First Scholastic printing.
- New York : Scholastic , c2016.
- 357 pages : map ; 22 cm.
- Waterfire saga ; book four. .
Maps on endpapers.
"Astrid must confront her ancestor, Orfeo, the evil force behind the rise of the monster Abbadon, while Sera and her Black Fins train goblin troops for battle against her uncle Vallerio's death riders"--