When you watch NCIS: New Orleans Season 2 Episode 13 online, a man falls from an overpass. Though the team initially suspects suicide, it soon becomes apparent that the young petty officer was murdered, manually strangled and his suicide staged. They start looking into his background and discover that he was an immigrant from Honduras, living with his mother and brother, and volunteering with other immigrants and helping out wherever he could. His family claims that Mateo was a good boy and had no enemies to speak of. So why, then, is he laying dead in the morgue? Things become even more complicated when Loretta completes her autopsy and discovers that Mateo's hand was broken intentionally, with a hammer, some days before his death, and that he was suffering from septicemia brought on by a form of meningitis virtually unheard-of in the United States. What happened to Mateo? And what does it have to do with a human trafficking ring operated by a violent Honduran street gang? There are more questions than answers, it seems, and it's up to the NCIS team to find out the truth and bring justice to Mateo's family. Find out what happens next by watching "Undocumented" online!