The impossible leaping skill of this urban legend (ripped from the penny dreadfuls of the Victorian age) had such a technological flare. Ah, the idea that an inventor-cobbler with a gas-powered dental retainer could inspire demonic fear. His attacks lasted a century! (Also at Wikipedia.)
Not sure why I thought this was a good category.
Who was sending plastic Garfield telephones up the Iroise coast for 35 years?
You can probably skip this - but I find it interesting. Turn of the (19th) century mysteries competed toward more and more improbable murders. Some of the endings are still baffling.