This second of a two parter was after "Kate" was killed, and the NCIS team goes full bore after her killer. Throughout the episode her "ghost" either appears to the crew, or is in their thoughts, as they try and work thru her demise. There has been some discussion in other postings about not caring much for the Kate character, but I thought she provided a level balance between the wide range of emotions of the others, and I still miss her, and look forward to the re-runs she is in. The new character of "Ziva" eventually becomes Kates replacement in the series, and she is completely different from Kate, more emotional. It took me awhile to like her since I was never sure at first where her loyalties really were. At the end of the episode., as they are all walking away from the grave-site, Abby has a music player (MP3?) that plays some New Orleans Jazz style music. What is the song, and what group??