Classic SF shorts (along with a few of his equally famous mysteries) from the 40s-60s. Most of these are short-shorts, and feature twist endings that would have fit in perfectly on "The Twilight Zone". They tend to be a bit more satisfying than the longer tales, which either belabor the point or meander a bit (but remain entertaining or, in cases, disturbing).

Good stuff from an author sadly little known these days (and that mostly by Trekkies for his after-the-fact credit for the TOS episode "Arena," after Brown's lawyers objected to the distinct similarities to the story contained in this book).