Cold Justice - What2Watch

Detective Tonya Rider joins veteran prosecutor Kelly Siegler in tiny Picayune, Miss., where they try to pick up a killer's long-dormant trail in the new episode "A Touch of Evidence." The victim in this heartbreaking case was Leola Jordan, a 91-year-old grandmother, whose murderer stabbed her nearly 40 times while she was in her bed. The investigators hope DNA may point to her assailant's identity, which may also reveal another tragic family secret.