1: "Saying goodbye to Ducky Mallard, a beloved NCIS character"

2: "The emotional farewell episode that had fans in tears"

3: "Remembering the witty and wise Dr. Mallard"

4: "A surprise cameo by Tony DiNozzo leaves viewers in awe"

5: "The legacy of Ducky Mallard lives on in NCIS history"

6: "Fans react to Ducky's departure and Tony's return"

7: "Ducky Mallard: A tribute to a true NCIS legend"

8: "Tony DiNozzo's brief but impactful return to NCIS"

9: "The end of an era: NCIS bids farewell to Ducky Mallard and Tony DiNozzo"