A megacity like no other, Neo Akron is an entirely enclosed environment that stretches imposingly into the sky. It's also a city divided. Physically it is divided into 24 layers, each a mini-city within the city ten stories high, and inter-layer movement is highly restricted. The higher up the city, the more affluent the citizens.Noir's life on Layer Seventeen had been nice and quiet ever since his band tore itself apart on the edge of international stardom. But it's not going to stay that way since his latest one night stand has left him with something unexpected that not even penicillin can do something about: a profile on underground app Murdr.Kuro is a brilliant programmer trying to figure out who has hacked his latest app and why. Noir may just be the clue he's needed.But things will not be easy. The police already have their hands full tracking a serial killer with a gruesome MO and the Layer's tech giants are engaged in a cold war being fought in the boardrooms and on the streets. Then there's that little piece of tech that has wound up in the hands of one of Noir's old bandmates.Layer Seventeen will never be the same again. From the twenty-four hour nightlife of the Soapland District to the artificial beachs of District Nuevo; from the ultra-posh digs of Saville to the girls only Lolita District the damage will spread, threatening every corner of the Layer, and possibly the whole of Neo-Akron itself.