The poem, that is written in code by Angela Kelp, reads like this: "He Wanted To Kill Her, But She Fought Him Well; Held Her Under The Water, Until Her Body Was Still; He Wanted To Love Her, So Why Did He Kill?"
Ducky tells Gibbs that his first pet was a guinea pig called Huncamunca. In the play "Tom Thumb" there was a character called Princess Huncamunca. Beatrix Potter wrote a story called "The Tale of Two Bad Mice". The two mice were called Tom Thumb and Hunca Munca after Fielding's play.
When Gibbs and DiNozzo go to talk to the girl, Angela Kelp, she is seen analyzing troop movements in a video game. The sequence being displayed is the first mission from Call of Duty: Modern Warfare 2 after the player's character dismounts from the convoy to battle insurgents in a school.
This is Carlease Burke's second appearance as D'Arcy McKinna. Both times Gibbs has brought her an orange soda, to which she says "You remembered!" Yet the first time these two met has not been explained as to why she is memorable for Gibbs.
The music playing at Ducky's Thanksgiving was Vivaldi's Spring Concerto from The Four Seasons. Autumn would have been more appropriate for the occasion.