To appreciate Zona, Geoff Dyer’s twelfth book, you’ll need to watch the Andrei Tarkovsky film, Stalker, among the most treasured and troubling movies in the history of cinema. If you’ve never seen it, you’ll need to take your time with the film—it is relentlessly bewitching—before reading Dyer’s discursive exploration of its maze of meanings and its thirty years’ spell upon him.