Tina Tournai-Sandoval's disappearance from Greeley went unsolved for 22 years.

Now, with her estranged ex-husband John Sandoval in prison for her murder, Dateline NBC will profile her case as part of two-hour special at 8 p.m. on Friday.

The episode, titled "The Devil Was Watching," includes interviews with Tina's friends and family, Weld District Attorney Michael Rourke, and detectives Brad Goldschmidt, Keith Olson and Mike Prill.

More From K99