McDevitt, Jack -- Polaris

Once again, historical artifacts turn up a mystery. For a change, they're less than a hundred years old -- stuff from a research ship whose crew mysteriously disappeared. The author manages to give away his mcguffin to the readers a half-book before the protagonists clue in -- perhaps they were distracted by wondering how many vehicles the bad guys could sabotage before they were reduced to deflating the unicycle. However, still a decent read.

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