I have to disagree with the commenter who hated seeing the NCIS characters acting as the people involved in the mystery they were trying to unravel based on the letters between a pair of star crossed lovers from 50 years ago. I thought this was one of the sweetest episodes with solid performances from all of the cast. It was a great change of pace from the normal stories we typically see... and the fact that these are so rare are why we like them so much.