Real-life NCIS agents open up about the murder of a sailor's 10-year-old daughter that haunted the agency for three decades and the "unsolvable" murder of a Navy man's son and the promise to his family to resolve the case.

The convicted killer of a young Florida mom speaks out for the first time and admits he didn't tell investigators everything – but vows he didn't kill her. Is he telling the truth now?

Real-life NCIS agents team up with Air Force investigators to solve the murder of an American airman in Japan, leading to a dark, twisted path of deception, fraud and witchcraft.

Real-life NCIS agents investigate the murders of a Marine sergeant and his wife 67 days after they wed. Was the motive money, was it racially motivated or was it something else?

Naval Criminal Investigative Service agents bring viewers inside the investigation into the attack on a marine stationed in Kuwait that at first looked like a terrorist attack, but led them on an unexpected trail to something else.

A Navy lieutenant's mysterious illness aboard the USS Forrestal leads to his death. Investigators say he was poisoned -- after 13 years, the trail leads to a suspect with an unusual motive for murder.

NCIS agents take viewers inside the mysterious case of a young Navy officer murdered after using an ATM. The investigation would lead the agents on a trail of greed, lies and double-lives.