The following contains spoilers about the February 19 episode of NCIS: The Stories We Leave Behind.
NCIS paid tribute to longtime cast member David McCallum with a special tribute episode, incorporating the death of his character, medical examiner Donald 'Ducky' Mallard, into the show.
Brian Dietzen, who plays Dr. Jimmy Palmer, co-wrote the episode, which featured Palmer showing up at Ducky's house with coffee, only to discover him in bed, having died in his sleep.