I live in Houston and I like to read mysteries, so when I came across a Goodreads list called "Murder in H-Town," I promptly checked it out. Much to my surprise, the first title on the list was a 99 cent ebook whose protagonists were a hobbyist and a provider! It was a good read, albeit a little too academically over the top in spots. Here's the Amazon link: Murder in the Molten Sea; it's also available on Nook.
Does anyone know of any other books out there, mysteries or otherwise, that feature hobbyists or prividers as protagonists?