The unequalled Edward D. Hoch has written the greatest number of short story mysteries. He's had a story published in every issue of Ellery Queen's Mystery Magazine since 1970. Also a master of the locked room mystery, it has been said that his brain should be donated for scientific study.
Discuss Mr. Hoch's works here, but don't give away the solution unless it's unavoidable! Post a message below.
I know that Hoch has authored several "Best Of" Anthologies, featuring various authors.