True Crime

JonBenét Ramsey, the six-year-old beauty pageant queen who lived in Boulder, Colorado, was murdered on Christmas Day 1996. 20/20 will be airing a new segment on the unsolved case.

There were 40 children who went missing in Michigan this year who have still not been found, according to the National Center for Missing & Exploited Children.

While each case poses a frustrating mystery, here are the 10 most puzzling cold cases in Northern Colorado.

Despite having fully recovered remains and modern science, this Jane Doe from Atlantic Highlands New Jersey has not found justice.

In the town of Sand Lake outside of Troy, New York, residents have seen these signs asking about the 1908 Sand Lake murder of Hazel Drew that inspired 'Twin Peaks.'

A bizarre murder mystery twisty true crime story that stretches from Michigan to Omaha, Nebraska gets the 20/20 treatment in a 2-hour episode, A Tangled Web.

This is the complete list of people that have gone missing and remain unsolved, according to the Maine State Police.

Mark Himebaugh was 11-years-old when he disappeared from Cape May County, New Jersey. The case remains unsolved.

There are several reasons why no one wants to live in the house where a horrific murder happened, especially the one that rocked Colorado residents in 2018: when Chris Watts murdered his entire family, including his two daughters.

Thanksgiving is a grim reminder of the disappearance of three Michigan brothers who spent the holiday with their father in 2010 and have never been seen since.