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.

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