Like most procedural series, NCIS‘ssuccess heavily relies on the strength of its ensemble cast. It needs good characters and interpersonal dynamics for audiences to love (and sometimes hate) to carry them from formulaic episode to formulaic episode. So, when some of the show’s actors choose to leave, their exit can be bittersweet: giving an opportunity for new stories and characters, but also forcing hard goodbyes. Lauren Holly’s departure as Jenny Shepard left such a mark on NCIS fans.