In 1992, David Wood became El Paso’s most notorious convicted serial killer. He has been on death row ever since. More than 30 years later, his lawyers have just a few months to argue his innocence and stop his execution. This is the first episode of a new five-part series from Serial Productions called “The Last 12 Weeks.” You can find the rest of the series by searching for “The Last 12 Weeks” on your favorite podcast player. To find out about new shows from Serial Productions, and get a look behind the scenes, sign up for our newsletter at: https://www.nytimes.com/newsletters/serial Have a story pitch, a tip, or feedback on our shows? Email us at serialshows@nytimes.com   Subscribe today at nytimes.com/podcasts [http://nytimes.com/podcasts] or on Apple Podcasts and Spotify. You can also subscribe via your favorite podcast app here https://www.nytimes.com/activate-access/audio?source=podcatcher [https://www.nytimes.com/activate-access/audio?source=podcatcher]. For more podcasts and narrated articles, download The New York Times app at nytimes.com/app. Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com [https://pcm.adswizz.com] for information about our collection and use of personal data for advertising.