Exclusive: Royal Pains Admits Numb3rs Alum Diane Farr

Summer is only a few months away, which means that Royal Pains is ramping up production. The USA series has recruited Numb3rs alum Diane Farr to guest-star in an upcoming episode, TVGuide.com has learned exclusively.

Farr will play Annie, a private investigator who is stricken by mysterious symptoms during an investigation. She fears her illness will prevent her from solving the most important case of her career. Sounds like a case for Dr. Hank (Mark Feuerstein) or should we say, now that Hank's left, HankMed's new head doctor Jeremiah Sacani (Ben Shenkman)?

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Farr will appear in the fourth episode of Royal Pains' upcoming sixth season.

In addition to Numb3rs, Farr is known for her roles on Rescue Me and Californication. She recently guest-starred on Two and a Half Men, Modern Family and Private Practice.

Season 6 of Royal Pains premieres this summer on USA.