September 28, 2010 at 09:45 PM EDT

Image Credit: Albert L. Ortega/PR Photos; Michael Yarish/CBSIt looks like David McCallum is about to receive the highest of honors from NCIS: An origin episode for his character Ducky!

Sources confirm to me exclusively that ex-Shield cop Catherine Dent is joining the CBS smash for at least two episodes as Whitney Sharp, a former NCIS agent who shares a past with Ducky.

Dent’s character is described as an educated, bright, and extremely capable federal agent who had an eye for talent and a tongue for persuasion back in the day.

Both of Dent’s episodes will air during November sweeps.

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