ROBERT CAMPBELL – Plugged Nickel. Jake Hatch #1. Pocket Books, paperback original; 1st printing, March 1988.

   Two halves of a body are found along the tracks of a train heading from Chicago to Denver, but railroad detective Jake Hatch suspects foul play more than just an unfortunate accident, His primary clue: a plugged nickel. Primary suspect: the local coroner.

   The problem with this is this: the nickel is not exactly plugged, nor is it exactly a nickel. The current day railroad background – a last link to a vanishing era – is nicely sketched in, but in retrospect the detective work is forced, and plagued with coincidence.

— Reprinted from Mystery.File.4, March 1988.

   
UPDATE: This adventure of Jake Hatch was followed by Red Cent (Pocket, 1989), but that was the last of his cases on record.