"Part Tim Burton, part J.K. Rowling! A terrific series." -Soman Chainani, New York Times bestselling author of the School for Good and Evil series

Ivy and her older brother Seb are back in Lundinor--the underground city where enchanted objects can do incredible things, if they're uncommon. But not everyone is thrilled for their arrival. Namely, Selena Grimes, the wicked ghoul who will stop at nothing to return her guild, the Dirge, to their former glory. So when Ivy and Seb learn that Selena is after the Jar of Shadows, one of the five most powerful uncommon objects, they know it's up to them to find it first.

But there's more than just Selena to worry about this trading season. A deadly game of Grivens, an escaped shape-shifting convict, and foes disguised as friends lurk in the shadows. Ivy will have to figure out who they can trust--before they all meet their uncommon ends.

"It's impossible not to hear the chimes of Harry Potter ringing through." -The Telegraph