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Marooned in Realtime

The book that was suggested to me that the previous book was the sequel to (and I missed a novella in-between them). I liked the concept, that there are these stasis bubbles you can be in where the world ages around you but you remain the same age. People bop around “through” time by letting it pass on outside the bubbles, strategically. So they might advance to millennia in the future to avoid global cataclysms, but they can never go backwards. This is more of a cop story than the last one which was more post-apocalyptic in some ways. The cop (who showed up in the novella I did not read) was trying to figure out how someone had gotten, as the title says, marooned in the past. I liked it in some places, it dragged in others.