Mark Harmon's departure from "NCIS" has left fans wondering if and when he will return. Executive producer Steven D. Binder assures that Gibbs will make a comeback when the right story arises. In the meantime, the show's production team plans to honor Gibbs' legacy. Binder believes that Gibbs' presence will still be felt even if he is not physically present. With Season 21 confirmed, there are speculations about the return of other original cast members to ignite nostalgia and retain viewership.