narrator: bill and mary yoder's chiropractic business was one of the busiest in the area, which came surprise to their hundreds of loyal patients. phelps: mary and bill -- they build up this chiropractic business, and they turn it, really, into a family business that everybody in utica really looks to as, "this is the place to go." narrator: the yoders had been married for nearly 40 years and had three grown children. on july 20, 2015, bill had the day off while mary worked with clients. but late that afternoon, mary got sick to her stomach, and this didn't appear like an ordinary bug. phelps: patients report she's running in and out of the bathroom, something she never did. narrator: once mary got home, things got worse and then spiraled steadily downward. the next day, she went to the hospital. phelps: she's in the e.r., and she is severely ill. her legs are swelling. her skin is turning green, basically. they can't figure out what's going on. narrator: mary was known for taking a lot of supplements. phelps: she lives a kind of green lifestyle. she only puts healthy things in her bo