Astronaut Gary Rendell is lost in the “crypts”, a dark labyrinth full of horrors. He has been wandering them for an indeterminate amount of time, and is evidently slowly going mad. Through flashbacks, Gary tells the reader about the mysterious artefact which houses the crypts, and how he came to be there.
Mr. Tchaikovsky uses first person narrative to tell the story as if Gary is speaking directly to the reader. In fact, on multiple occasions Gary specifically “speaks” to the reader. This makes the denouement of the narrative quite visceral, as the reader slowly realises why Gary is so despondent. An aura of doom suffuses the story, and the final twist is, if not entirely unexpected by that point, still heartbreaking.