It was a detective's nightmare, with no suspects in sight. Until... Find out what happened Friday at 9/8c on a classic Dateline mystery. | Dateline NBC

Two unsolved murders became four... The second Dateline Weekend Mystery at 9/8c. | Dateline NBC

The officer made his way inside, not knowing what or who he might find… The full story tonight at 9/8c on an all-new 2-hour Dateline mystery on NBC. | Dateline NBC

There was little to nothing left at the crime scene. But detectives did have a witness... More on Dateline tonight at 10/9c with Andrea Canning. | Dateline NBC

The case shifted from a missing person investigation into a homicide... The full story on Dateline tonight at 9/8c. | Dateline NBC

4.6K views · 20 reactions | Tonight on an all-new #Dateline, a woman makes a phone call naming her killer right before her death, which leads to his arrest, but 2 trials and 12 years later, authorities question if he was actually the victim and not the villain. Watch #Dateline on NBC4 tonight at 9 p.m. PREVIEW: https://nbc4i.co/3ggjAqt #TrueCrime #TrueCrimeCommunity #DontWatchAlone | NBC4 | Facebook