Author:  Kibuishi, Kazu 
Unclassified
Published on 6 July 2017 by Scholastic in the United Kingdom as part of 'the Amulet' series.

Paperback | 208 pages
152 x 228 x 11 | 440g
 Kazu Kibuishi's enchanting graphic novel series about
two ordinary children on a life-or-death mission continues!
In the third installment of the thrilling Amulet series,
Emily, Navin, and their crew of resistance fighters charter an
airship and set off in search of the lost city of Cielis, which
is believed to be located on an island high above the clouds.
The mysterious Leon Redbeard is their guide, and there's a surprising
new addition to the crew: the Elf King's son, Trellis.
But is he ally or enemy? And will Emily ever
be able to trust the voice of the Amulet?
Fully-illustrated stories for readers at all ages and all abilities
#1 New York Times bestselling series!
Amulet #1 was an ALA Best Book and shortlisted for the CBC's
Children's Choice Book Awards
Kazu illustrated the 15th anniversary Harry Potter covers in
the US