The short stories collected in this book represent Larry Niven's brief experiment to fuse science fiction with the format of a mystery/police procedural. The last two stories are pretty dull, because they deal with trivial issues. But the earlier stories are MUST READ works which seriously examine medical ethics which we will one day have to face. These stories depict a future in which the state of medicine is so advanced that human life can be indefinitely prolonged by organ transplants. This has led to the adoption of harsh criminal codes, whereby the smallest infraction can cost a person their lives. The value of fresh organs has also led to illegal 'organleggers' who murder people for their organs. This is a world that Niven has written entire books about, but it is no better realized than in these stories, which are truly chilling in their implications. You can't help but realize that we will have to face the moral dilemmas proposed in these stories one day. Will we pass the draconian laws imagined in these stories?