On Sept. 29, 1982, seven unsuspecting Chicago-area residents are stricken, and then die under mysterious medical circumstances. When the actual cause of death was discovered, a task force was formed to investigate.

Physicians discover a strange, genetic disease that causes progressive neurological deterioration in children.

In April of 2012, 61-year-old Mark Staudte, a father of four and local musician from Springfield, Mo., abruptly became ill. Nine months later, his 24-year-old daughter suddenly became ill and was hospitalized in critical condition.

Patients surface with similar symptoms and doctors have to act fast if they hope to save lives.

A few days after the death of Dr. Autumn Klein, a doctor at the hospital checks her chart and helps solve the mystery of what killed their colleague.

Seven-year-old Kyle Lewis loves summer, then he develops a headache and a high fever, so his parents bring him to the hospital; doctors race to find out what is wrong with Kyle in time to save him.