Death On A Cold, Wild River by Bartholomew Gill, told of the murder of Nellie Millar, who was an iconic fishing guide catering to single women. The victim, Nellie, an expert lure maker, also operated a store as well as a lucrative catalog business.
A possible murder weapon in the story, a knife, was inscribed thusly:
#440 SURGICAL STAINLESS
HARDENED TO ROCKWELL 57-58 SPECS
While driving her BMW, one character (Ruthie) expressed admiration for the "technical superiority" of German engineering that allowed her to "hear every tonsil wag, every fleck of spit that had struck those microphones in De-troit--no, no, Mo-town--dozens of years earlier."
Flint, Michigan, my birthplace, and Detroit, where I spent most of my adult life, mentioned in a murder mystery set in Ireland? Who knew! Add to those two items, the surname Millar and a lure maker with possible ties to my s-i-l's family, I related to this story on several different levels.