A big decision. New theories. And a mystery man revealed.

An attorney and his son undertake a new review of the evidence in Michelle’s murder and get a surprise opportunity to make their case to prosecutors.

After three trials, a verdict. But a Dateline viewer could change everything…

A retired sheriff’s deputy sees Michelle O’Keefe’s smiling face on a billboard and asks to join the investigation.

Police investigating Michelle O’Keefe’s murder encounter a talkative witness. Maybe too talkative.

She loved her shiny blue Mustang. Then it became a crime scene.

As a bonus for you, we’re sharing the trailer for Season 2 of Dateline: Missing in America. The chart-topping podcast series is back with a brand-new season and brand-new cases. Are you the key to solving a mystery? Correspondents Josh Mankiewicz, Andrea Canning and Keith Morrison report on perplexing missing person cases brought to Dateline’s attention by our social media followers. Each episode focuses on one person’s story, as told by those left behind. Listen carefully to the details, descriptions and clues offered by family, friends and investigators. Something you hear might jog a memory that could help authorities crack a case. Join us for the first two episodes on May 30th and make sure to follow Dateline: Missing in America here: https://link.chtbl.com/mias2_fdlw

When 18-year-old Michelle O’Keefe is found murdered in her shiny new blue Mustang in a California park and ride, investigators encounter a confusing crime scene and a witness who seems to know too much. In Dateline’s latest original podcast series, Keith Morrison takes us to the High Desert outside Los Angeles for a story featuring twists, turns and a sharp-eyed Dateline viewer who steers the case in an entirely new direction. Follow now to get the latest episodes of The Girl in the Blue Mustang each week completely free, or subscribe to Dateline Premium on Apple Podcasts for early access and ad-free listening: apple.co/datelinepremium