City of nightmares

"After a con goes wrong, nineteen-year-old Ness finds herself at the center of a criminal syndicate conspiracy, in a city where dreaming means waking up as your worst nightmare"--
Ever since her sister became a man-eating spider and slaughtered her way through town, Ness has been terrified of some other Nightmare murdering her, and terrified of ending up like her sister. Because in Newham, the city that never sleeps, dreaming means waking up as your worst fear. Ness will do anything to avoid becoming another victim, even if that means lying low among the Friends of the Restful Soul, a questionable organization that may or may not be a cult. To prove herself to the Friends, Ness accepts a simple job for the organization-- only for it to blow up in her face. Literally. Tangled up in the aftermath of an explosive assassination, Ness and the only other survivor-- a Nightmare boy she suspects plans to eat her-- must find their way back to Newham and uncover the sinister truth behind the attack. -- adapted from jacket