Hope and her family and friends were preparing for her funeral when they discover a shocking secret.

Dr. Vincent Gilmer was described as a kind man before he shockingly murdered his father. But why did his behavior change?

“Brain on Fire” author Susannah Callahan, spent a fortune identifying what was making her ill. After a misdiagnosis, a simple test was administered, and the real source of her ailment was unveiled.

In 2001, patients in New York and Florida show up at hospitals with mysterious bacterial infections. Disease Detectives are called in and soon discover something more sinister.

A rare genetic disease that prevents sufferers from sleeping becomes more and more extreme until eventually it causes death.

Charles Cullen was a critical care nurse who worked in hospitals in New Jersey and Pennsylvania. When several patients die mysteriously during his shifts, authorities begin to investigate.