Premise: Part horror movie, part medical detective story, ``Monsters Inside Me'' depicts what happens when people fall prey to an infection from a parasite, those nasty microscopic creatures found in water, soil and even in the air. Victims' stories are retold, including how doctors and scientists attempt to unravel each case before it's too late. Biologist Dan Riskin, assisted by doctors and other authorities who are familiar with each story, leads the scientific discussion about the parasites.
S03, E05 (First Aired: Nov. 2, 2012)
Doctors seek to uncover why an Oregon man has been suffering for two years from constant coughing and insomnia.
S04, E02 (First Aired: Oct. 7, 2013)
A teenage ballerina suffers from painful migraines and muscle failures; a young missionary's skin crawls when he uncovers an unholy revelation.