Here is a weird potential link between Danny Heinrich & the Johnny Gosch / Eugene Martin cases:
Johnny Gosch's mother hired a private investigator named Sam Soda. If I understand right, she claimed that he had provided her with advanced notice of the Eugene Martin abduction (which was supposed to be evidence of a child sex ring which he would have been investigating). Separately, a pedophile and self-proclaimed 'CIA asset' (Paul Bishop) contacted Johnny's mother claiming knowledge of a CIA acknowledged pedophile ring which had been responsible for Johnny's abduction. He also claimed that Sam Soda was involved with the Eugene Martin abduction.
I am not sure that I can really wrap my head around that, but my point leads to this: I decided to do a quick search to see if this mysterious Sam Soda figure had any known ties to Minnesota. The first thing I came across, was
this WS post from 2014, which included the following tidbit:
Now, if I am not mistaken, Danny Heinrich worked for Fingerhut, in St. Cloud, at or around the time of the Jacob Wetterling abduction.
Even if verified, that doesn't necessarily mean anything, but I thought it was a strange coincidence worth pointing out.