D’Wayne Swear, a former NCIS agent who inspired CBS Entertainment’s NCIS: New Orleans takes viewers inside the real-life cross-country search for the killer of a young woman in San Diego, in CBS’ 48 Hours: NCIS: “To Catch a Killer” to be broadcast Friday, May 12th (10:00/9C). 48 Hours: NCIS is narrated by NCIS star Rocky Carroll.