Brian Dietzen, is well-known for his role as chief ... He is one of the longest-running actors on the CBS police procedural. The actor was originally meant to be a guest star for one day on ...

NCIS star Brian Dietzen has shared a new trailer for upcoming tribute episode to the late David McCallum, which will air next Monday. The actor, who played Dr. Donald 'Ducky' Mallard from the very ...

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IMDb.com, Inc. takes no responsibility for the content or accuracy of the above news articles, Tweets, or blog posts. This content is published for the entertainment of our users only. The news ...

19 on CBS. The actor breaks down Monday's action-packed episode and teases the duo's complicated relationship status. New episodes of 'NCIS' air Mondays at 9 p.m. ET/PT on CBS.