After an Ohio coal miner is found fatally shot in his home, investigators dig into his personal life and uncover a secret affair that reveals a surprising suspect. Dennis Murphy reports Saturday, ...

(NBC News) — On Friday’s “Dateline,” Dennis Murphy reports on the murder of a Baltimore firefighter. When a firefighter Jon Hickey is murdered, the investigation unravels a web of secrets ...

detectives struggle to determine if her murder was connected to her political career. Here is a preview of Dennis Murphy’s ...