I just finished reading A Galaxy Unknown by Thomas DePrima.
This is a classic space adventure novel featuring a cute young Ensign lost in space for ten years, who after being found turns out to be a brilliant warship commander. All the expected elements are there with FTL travel and communications, space stations, hollowed out asteroids, laser weapons, torpedoes, and so on. I don't think there were many new ideas on show, but it was written quite well and had a good pace.
I wasn't completely convinced by some of the main bad guy actions. Why worry about strict controls on abusing prisoners when they heal easily and you're just going to mind wipe them later? I thought the full court-martial for the heroine when she returned triumphantly home was pretty cool. I've always wanted to see how a rigid big-military society might actually deal with this sort of action in the aftermath.
I think I'll read more of the series, it was a relaxing, enjoyable read.