Season 12 begins with a series of surprises and exciting events with the death of the naval commander near the White House because he was on his way to speak with the US president. Gibbs' mission and his team determine whether this is because of his secret relationship with the president or because of his marital problems. On the other hand, we have a new knowledge of Dr. Mallard's story, which he and the bishop will travel to England in search of answers to find out why the Englishman who was killed in the United States may have a list of other dead naval men.
