Workshop owner by day and spy for the Menagerie by night, Molly dreams of swapping the Faerie citadel for the wider realms of Faerie. The citadel isn't safe and escaping it is rare, so when one of the recently missing Fae from the Artificers' Guild turns up dead, Molly is determined to dig right to the core of the rot infesting her home. But in a self-contained city where the enemy knows all the same routes she does, it won't be long before they're hunting her in return.