Contributed by
Vijay Fafat
A detective, one Mr. Pearson, catches the crooks using a little geometry. As the story tagline says,
(quoted from Mathematical Doom)
“Crooks try to subtract a copper from life  and find he had added up a Mathematical Doom for them!”

Pearson was kidnapped by some gang members and was being taken in a car to be executed. He had the presence of mind to keep a count of a particular sound in the car and once he escaped, it was a relatively easy way for the police to catch the gangsters. As the spoiler ahead recounts:
(quoted from Mathematical Doom)
Sure,” said Pearson. “ I got the idea as soon as I heard it. Count the number of times that loose chain slapped the fender between each turn, and you’d have the distance the car went with me blindfolded in it. So I did. “We went fifteen hundred slaps north from the electric bread sign, eight hundred and twelve to the left, sixteen hundred and fiftyfour to the right. But on the last turn I stopped us at fourteen hundred before we gave our hand away. That left two hundred and fiftyfour more turns of the wheel. Thirtytwo inches wheeldiameter, times 3.141, or about three and a seventh. is the number of inches the car travels with each wheel turn. Multiply ’em out and you get four tenths of a mile —which was the distance ahead of us to Golden’s hangout.”
Ames shook his head.
“God help the crooks in this burg if you ever get past mathematics and start using algebra on them!” he said.


Normally, I would not consider a work of fiction including simple arithmetic to be a candidate for this database of mathematical fiction. However, I was convinced to create an entry for it by Vijay Fafat, a frequent contributor to this site.
Mathematical Doom was originally published in the June 1, 1936 issue of The Shadow Magazine, pages 102110.
