The Last Day Dateline : Season 25 Episode 9

California, 2014: Erin Heavilin Corwin, a Marine wife, lives safely on a Marine base. Or so she thinks. She goes missing after visiting Joshua Tree, a vast national park in the Mojave desert. Her husband Jon is suspected first, of course, but he seems to be genuine in his grief for his lost spouse. During the investigation, a web of infidelity, lies and intrigue reveals itself.