My mom told me that the local Inuit wanted to help, but were scared off by the Franklin men acting very irrational.
Maybe from the lead. Could be.
From the lead poisoning? (Tin cans of food were soldered/sealed with lead) Perhaps that grain mold related to LSD?
I saw one documentary on a visit to one known site from one of the attempts to find a Northwest Passage. Each succeeding expedition ran into ice earlier than the previous one.
Any way, they were shocked to find that the first of two corpses they were allowed to disinter for autopsy had already been autopsied - apparently by the ship's doctor. Things just didn't look right on the x-ray, the organs having been dumped randomly back into the body.