As the murder of 6-year-old JonBenét grips the nation, a bungled crime scene and relentless media scrutiny of her parents stall the hunt for her killer.

After the grand jury decides on the Ramseys' case, suspicion falls on a pageant photographer. Years later, an email thread triggers a shocking arrest.

Conflicting theories set the Boulder police at odds with the city's prosecutor. A legendary detective steps in and uncovers clues that shift the case.