NCIS Season 7 Episode 4

Marine staff sergeant Daniel Cryer's nearly consumed corps is fished up off the Tanzanian coast. He was a terrorism infiltrator, reported deserted -rogue according to Mossad- but last seen aboard the missing freighter Damocles. McGee and Abby work out the storm story is a fake, Ducky Daniel was shot. Now the wreck is found, with 18 executed crew corpses. Ziva is interrogated, ironically voluntarily as she wants to formally join NCIS and become an American. Her pa sends agent Mossad officer Malachi Ben-Gidon to prevent that.