Erin Corwin, a pregnant 19-year-old Marine wife, was found dead in an abandoned mine shaft in Joshua Tree National Park after weeks of searching. “48 Hours” correspondent Natalie Morales offers unique insights into Corwin’s case, including the NCIS agents’ tireless efforts to uncover her body. Hear a complex story of infidelity and obsession that tore more than one Marine family apart and led to Corwin's tragic death. Get early, ad-free access to episodes of 48: NCIS by subscribing to 48 Hours+ on Apple Podcasts. Subscribe to 48 Hours+: https://apple.co/4aEgENo See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.