Former West Wing star Richard Schiff is headed to NCIS.

Over the course of multiple episodes, Schiff will portray Harper Dearing, an eccentric international businessman who's no stranger to hobnobbing with the world's elite, according to TV Guide, which first reported his casting.

However, he is haunted by the loss of his son, who died in a terrorist bombing some years ago. That should give him an interesting perspective to offer the NCIS team, show-runner Gary Glasberg says:

"The mysterious character of Harper Dearing is enormously complex and Richard will bring unexpected nuance to the part. This is a treat that will help propel us into the finale of what's been a tremendous season." 

"I was a huge West Wing fan. Richard Schiff is a brilliantly gifted actor and I'm thrilled he's joining us."

How long will he stick around? In addition to appearing in Season 9's final episodes, Schiff may also play a part in next season's premiere. CBS officially renewed NCIS for Season 10 last month.

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Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.