While performing a strip-tease to an Internet crowd, a Marine Sergeant's wife is killed but when Gibbs and the team investigate after hearing from Carr's neighbors that no-one's seen her for two weeks, they discover that Carr's body is missing. Things take a turn when it's revealed that Carr's neighbor has also disappeared and it's soon discovered that the two women were members of a live internet sex site they created while their husbands were away serving in Iraq. Roberts's body is later found but Carr is still missing although Abby with the help of her new assistant soon determines that the video of Carr being supposedly murdered is not what it appears to be....