Richard Schiff Richard Schiff

Former West Wing star Richard Schiff is headed back to Washington D.C. as part of a multi-episode arc on NCIS, has learned exclusively.

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Schiff will play Harper Dearing, an eccentric international businessman who is no stranger to hobnobbing with the world's elite. However, as we previously reported

, he is haunted by the loss of his son, who died in a terrorist bombing some years ago. Perhaps he'll have an interesting perspective to offer the NCIS team?"I was a huge West Wing fan," executive producer Gary Glasberg tells "Richard Schiff is a brilliantly gifted actor and I'm thrilled he's joining us for this multi-episode storyline.  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."  In addition to appearing in Season 9's final episodes, Schiff may also play a part in next season's premiere.

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Besides his Emmy-winning work as communications director Toby Ziegler on The West Wing, Schiff has appeared on such series as Roswell, Burn Notice, White Collar and the short-lived Criminal Minds: Suspect Behavior. He most recently recurred on the freshman season of Showtime's House of Lies.NCIS airs Tuesdays at 8/7c on CBS. The Season 9 finale is slated to air May 15.