Does Ducky Leave NCIS
Yes. Dr. Donald Mallard, played by David McCallum, leaves the main NCIS cast in season 19. His final regular appearance occurs in the episode titled "Great Wide Open," which concludes his long-running role as the chief medical examiner.
Why Does Ducky Leave NCIS
The departure follows a planned narrative exit. After years of service, the character transitions from active duty to a consulting role. The storyline allows him to step back from the morgue while remaining connected to the team, giving his exit a natural and gradual progression.
When Does Ducky Return to NCIS
McCallum has continued to appear in guest spots after leaving the regular cast. He has returned for special episodes and milestone moments, maintaining the character's presence. For more details on his appearances, you can check the official NCIS page on CBS.
