 It's impossible to count the number of books that Isaac Asimov wrote, edited, or otherwise collaborated on during his lifetime. The number is astronomical. And here's one of the little lesser-known bits. It is a collection of crime stories set in the science fiction genre. Each of the 13 stories is a different type of crime story. You've got your hard-boiled detective, your who-done-it, your why-done-it, how-done-it, the locked room mystery, the police procedural, trial and punishment stories. And the authors are who's who of science fiction. You've got Jack Vance, Philip K. Dick, Isaac Asimov himself, Clifford Simac, all of whom I've talked about before. But you've also got Avram Davidson, Larry Niven, and William Tin, who I have not talked about yet, but I will.