David Erik Nelson made his first appearance in F&SF in the July/August 2014 issue, with a hard science fiction story "The Traveling Salesman Solution." He returns next issue with "There Was a Crooked Man, He Flipped a Crooked House," a novella about an old mansion in Detroit and a new danger that resides there. Over the next few issues, we'll also be bringing you stories by 2016 Hugo Award-winner Naomi Kritzer, Peter S. Beagle, Gwendolyn Clare, Gardner Dozois, Robin Furth, Rahul Kanakia, Marissa Lingen, Michael Swanwick, and a brand new novelet by SFWA Grand Master Samuel R. Delany.