I read and reviewed each of the three volumes collected here separately, so this is basically just for my own records. The first volume earned three stars from me, and the two following books each earned four, so the collection rating is an average of these, rounded up.

In a sense, the three books collected here are the same story. Each is a story about two men, one of whom investigates the other as the professions of writer and detective become absolutely intertwined. Each of these efforts results in an obsession that undermines the sanity of the investigator, and leaves him unsure not only of his own identity, but that of his target. City of Glass, the first version, is I think a little clumsier than the others; the protagonist becomes obsessed in immediately alarming ways - almost incredible ways, in that I find it difficult to give them any credence. The descent into compulsion and compromise is more measured in the later books, and because of that they feel more immediately convincing. That drew me in as a reader, making me feel as if the books' laser focus on the investigated man somehow made me an active participant in the act of watching. It's very effectively done, and how disturbing it is creeps up only very slowly.