Marooned in Realtime

This is a pretty neat SF world with a rather dull murder mystery plot slapped on top of it. It gave me lots to think about in terms of what the world could look like if we had something to strive for — infinite life, seeing the end of time, having energy capabilities orders of magnitude of orders of magnitude more than we have today. The plot itself felt rushed and the mystery's resolution was underwhelming, but it's not really about that. I think. Maybe.