Mondays and Fridays on NBC (10-11 p.m. ET); "Saturday Dateline Mysteries" on NBC (8-10 p.m. ET) and Domestic Syndication (Check local listings for times); Season Premiere: Friday, Sept. 27 (9-11 p.m. ET)
A husband convicted of murdering his wife is granted parole, and others fear he may kill again. Keith Morrison reports
When college student MacKenzie Lueck vanishes from a park in Salt Lake City, her friends are dedicated to finding answers. Keith Morrison reports on the search that made national headlines and the secret that shocked even her closest friends.
A soldier, just back from Afghanistan, is gunned down on the side of the road in Kentucky. Detectives quickly uncover a secret that could solve the case. Andrea Canning reports.
When Crystal Taylor is murdered, her sisters are determined to find the killer. Josh Mankiewicz reports on the unexpected source that turned the case upside down.