The lives of three families are twisted in knots. A mysterious infection brings a tough ultra-marathoner to his knees. A teenager contracts one of the most feared diseases on the planet. And a woman's brain is practically set on fire.

Cast: Veronica James, Amanda Johnson, Rachel Leighson, Casey Lynne, Sumari Matthew, Armen Mazlumian, Grayson Alexander Miller, Robert Sciglimpaglia