Question: who are the interns in grey's anatomy season 9

title: Grey's Anatomy (season 9)
text: In August 2012 , it was announced that Camilla Luddington , Gaius Charles , and Tina Majorino had been cast as Jo Wilson , Shane Ross , and Heather Brooks , respectively ; these characters would be the new interns of Seattle Grace - Mercy West . TVGuide later reported that even with all of the recurring cast being added to Grey 's Anatomy for the new season that True Blood star Camilla Luddington is the only actress with an option to become a series regular . In September 2012 , it was announced that Jerrika Hinton and Tessa Ferrer had been cast as new interns Stephanie Edwards and Leah Murphy , respectively . In August 2012 , it was announced that Debbie Allen would reprise her role as Catherine Avery at sometime in series , and she is set to direct the third episode . In September 2012 , it was announced that Steven Culp would be cast as a new doctor at a new hospital , and would be known as Dr. Parker . 

Answer: answer: In August 2012, it was announced that Camilla Luddington, Gaius Charles, and Tina Majorino had been cast as Jo Wilson, Shane Ross, and Heather Brooks, respectively; these characters would be the new interns of Seattle Grace-Mercy West.  In September 2012, it was announced that Jerrika Hinton and Tessa Ferrer had been cast as new interns Stephanie Edwards and Leah Murphy, respectively.
answer: In Grey's Anatomy (season 9), it was announced that Camilla Luddington , Gaius Charles , Tina Majorino, Jerrika Hinton and Tessa Ferrer had been cast as Jo Wilson , Shane Ross , Heather Brooks , Stephanie Edwards and Leah Murphy, who are the new interns of Seattle Grace - Mercy West.