"Geared for Slaughter."
By John Benton (house pseudonym, possibly Norman A. Daniels).
First appearance: Thrilling Detective, March 1939.
Short short short story (2 pages).
Online at Archive.org (HERE).
"I'm a killer. I not only admit it, but I'm proud of it."
It's said we're living in the age of specialization—and apparently that goes for
criminals, too . . .
Typo: "on the roof of an office buildings".
- We're guessing "John Benton" really was Norman Daniels (Norman Arthur Danberg), who, as we've noted (HERE), can be regarded as a "nearly forgotten uberpulpster." If mystery stories about steam trains interest you, try Daniels's "Satan Turns the Timetables" (HERE).