When I was a kid, I loved science fiction. (I still do, but not in the same way.) I read all the digest magazines in the middle to late '50s, but, as I've probably said before here, I gravitated to the lower-end ones, the ones that published a lot of adventure stuff. I ran across the name Robert Randall there, just as I did in Astounding, and even at the time I knew that the name was a combination of the first names of Robert Silverberg and Randall Garrett. I even knew that they were writing under many other names as well and that they were rumored to have written every story in at least one issue of some magazine or other. I just didn't know what the other names were. Now I do, and some of those names, Clyde Mitchell, for example, along with Robert Randall, are in this great short story collection from Crippen & Landru. The stories appeared in Amazing, Fantastic, Future, and Science Fiction Quarterly, among my youthful favorites not only for their stories but for their covers (maybe you can see why from the cover I've used). Many of the stories seem pretty bad on rereading now, but the ones by Silverberg and Garrett generally hold up very well.
The seven stories in A Little Intelligence are all mysteries as well as science fiction. A couple of them feature a Roman Catholic priest as the detective. These were aimed at Anthony Boucher at F&SF but didn't make the cut. They're still well worth your time, as are all the stories in this entertaining collection. Silverberg's excellent introduction is just as entertaining, not to mention historically important. Great stuff, and highly recommended.