S1.E1 ∙ Hope

Doctors discover a shocking secret about a young mother dying of cancer.

S1.E2 ∙ The Strange Case of Dr. Gilmer

A doctor investigates whether a rare disease drove a beloved physician to commit murder.

S1.E3 ∙ Into Madness

A difficult-to-diagnose illness causes symptoms that mirror schizophrenia.

S1.E4 ∙ Disease Detectives

Several patients arrive at the emergency room with strange infections, so the CDC Disease Detectives are called to investigate.

S1.E5 ∙ Family Curse

A rare genetic disease causes fatal insomnia.

S1.E6 ∙ Angel of Death

Several hospital patients die mysteriously, leading hospital authorities and the police to investigate sinister circumstances.

S2.E1 ∙ Tiny Monsters

Seven-year-old Kyle Lewis loved summer. All of a sudden Kyle wasn't feeling well. He had a headache and a high fever so his parents brought him to the hospital.

S2.E2 ∙ My Wife Can't Breathe

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.

S2.E3 ∙ Outbreak

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

S2.E4 ∙ Family Secret

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.

S2.E5 ∙ What's Wrong with the Twins?

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

S2.E6 ∙ Mysterious Epidemic

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.