“Gut Instinct” In the summer of 2021, a doctor celebrates his retirement with a rafting trip in the Grand Canyon. But shortly after he gets back, he begins experiencing debilitating stomach pain. Desperate to figure out what’s wrong with him, he tries to diagnose himself. He suspects the answer is a horrible disease that people rarely survive.  “Into the Woods” After a camping trip in the summer of 2009, a woman develops a gruesome rash that covers her body with painful welts and makes her mouth bleed. Multiple doctors can’t figure out what is wrong with her – because the answer is something few physicians would ever suspect. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.