The Tie That Binds

"The Tie That Binds" is the ninth Christmas episode of the CBS drama NCIS, aired in the show's fourteenth season.

Synopsis
The NCIS team tracks evidence from the murder of a Navy captain to Ducky's deceased mother. The probe leads Ducky to look back and question a pivotal life choice he made 37 years ago. Meanwhile, the team exchanges holiday gifts; and Gibbs eats Christmas dinner with Fornell.