"Dig It Deep."By David X. Manners (1912-2007).
First appearance: Popular Detective, May 1948.
Short short short story (4 pages).
Online at Archive.org (HERE).
"Detective Carter lets a hunch lead him to a killer!"
This policeman is sure he's got the killer; the killer is sure he's thought of everything. We leave it to you to predict just who's right . . .
- Says FictionMags about our author: "According to his son Tim he wasn’t actually 'David X. Manners' but was 'David X Manners' as the 'X' was his whole name and not an initial."