Thief of Night - Holly Black

Charlie Hall used to be a talented con artist and thief – until her last job nearly killed her. Instead of walking away, she bartered her freedom to the Cabal, a ruthless circle of elite gloamists who trapped Charlie’s boyfriend, the powerful shadow named Vince. As the Cabal's new Hierophant, Charlie hunts rogue shadows on their behalf – not out of loyalty, but because it keeps Vince out of their hands. Or, at least, what’s left of him. The tether that binds Charlie and Vince erased every memory he had of her, leaving behind only Red – a dangerous Blight with Vince’s face. Cold, ruthless, and angry, Red doesn’t trust Charlie; he doesn’t like her, so when she’s pressed into service by the Cabal’s most manipulative member, the Puppeteer, she’s on her own. Charlie’s no investigator, just a thief in over her head, sent to track down the Blight behind a brutal church massacre. And worse, her own shadow is making plans to betray her. Vulnerable, heartbroken, and magically outmatched, Charlie has one last chance to save herself, but the price might be the one person she thought she couldn't bear to lose.