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Floating Hotel

You hit a certain age, you’ve read a lot of books and you can say “Another book in the luxury space hotel mystery genre.” Turns out I like that genre quite a bit and this was a good example of it. People wind up on the floating hotel because they’re escaping life circumstances in a dystopia where there’s been one Emperor for 500 years and you’re not allowed to even mention aliens. But... someone’s speaking truth to power. And are they in the floating hotel? And how do you find them?