Jeanna Giese complains to her parents that she's fatigued and has numbness in her arm. Doctors speculate that it might be Lyme disease or West Nile, but what Jeanna has is far more sinister.
Several doctors and CDC authorities spend months trying to figure out what California honeymooners, a surfer in Hawaii and a toddler in Tennessee have in common.
Dr. Bill Lidner collapses after returning home from a family trip overseas; his daughters find him bleeding; they don't know it, but it's the first sign that something's very wrong.
Paul and Alison Frase were told their child's disorder had no treatment and no cure. Scientists tell them their one hope depends on finding a dog and the right genetic code - the search begins.
Florida college student Lindsey Meyer and Michigan E.M.T Kevin Nesbit both come down with a painful sore throat. What seem like symptoms of a common cold, soon spiral into a life or death situation.
What really happens when we die? For thousands of years, the dreams and visions of the dying have captivated cultures. But what are they - what causes them? And are they real?