This story is billed as “Agatha Christie in Space”. I’m not actually a Christie reader myself — somehow, mystery has never made it high enough up my priority queue to read, though I’ve enjoyed TV adaptations of Christie’s stories — so I can’t speak to how well the Christie-style was rendered, but as a mystery it held up well. We got our first body on the first page, and very quickly after that we were given a panoply of possible suspects, each with their own very different and very strong preferences and motivations. The opening pages fairly teemed with conflict. After that, the story was stuffed full of uncertainty, second-guessing, mistakenly drawn conclusions, and even a possibility that would not have been available to Christie — that the murderer might be an alien. All in all, I found it exquisitely composed.