The murder of a Navy communications officer after using an ATM leads NCIS agents and police on a trail of twisted relationships, lies and secret double lives.

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.

When a Marine was nearly killed in Kuwait, NCIS investigated a terror plot but instead found a love triangle.

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?

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.

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?

Haunted by the death of a sailor's 10-year-old daughter in 1984, NCIS agents open up about the heartache and the three-decade long drive to find her killer.