Described as a mystery, but not one in the classic Sherlock Holmes sense. Regardless, was very good, I was pretty amazed that it links in back (forward?) to Foundation and Earth, even though they were written nearly 40 years apart.The character of Elijah Bailey was pretty neat, and the sci-fi development was top notch. Perhaps because this was written at the beginning of his career (I think 1954) some of the character development and dialogue is a bit wooden, but no one reads Asimov for the dialogue.In all, a pretty great book, and a good quick read. Only 200 or so pages, and easily knocked out in a couple of hours. Well worth it.
