The highly anticipated, thrilling conclusion to Kazu Kibuishi's #1 New York Times-bestselling series! After her confrontation with Ikol, Emily finally understands the stone's power and what she must do to defend Alledia from the shadows. As she travels to Typhon to help her mom and Navin, Prince Trellis returns to the Kingdom of the Elves to save his countrymen -and confront the fraud who has seized power in the absence of a king. The threat of darkness follows all Stonekeepers closely, and it will take the strength of both new friends and old foes to conquer it... and survive.

Kazu Kibuishi's #1 New York Times-bestselling graphic novel series continues! Emily, Navin, and their crew of resistance fighters charter an airship and set off in search of the lost city of Cielis. There they hope to find help from the Guardian Council's powerful Stonekeepers. It's a mission that Alledia's survival depends on, and time is running out. Emily's got to find Cielis before the Elf King finds her.

Emily and her friends think they'll find the help they need in Cielis, but something isn't right. Streets that were once busy are deserted, and the townspeople who are left live in crippling fear. Emily is escorted to the Academy where she's expected to compete for a spot on the Guardian Council, the most powerful Stonekeepers. But as the number of competitors gets smaller and smaller, a terrible secret is slowly uncovered-a secret that, if left buried, means certain destruction of everything Emily fights for.