When Addison's patient and the life of the three unborn babies she is carrying as a surrogate hang in the balance, Sam's new girlfriend, Vanessa, and Addison are sharply divided on the course of treatment. Meanwhile Cooper seeks Sheldon's help with a... (more) young patient, but their personal quarrels over Charlotte get in the way, and Naomi has a dilemma of her own between William and an unexpectedly charming Dr. Fife.

Brian Benben, Christina Chang, Derek Phillips, James Morrison, Judith Hoag, Lauren Bowles, Madeline Carroll, Michael Patrick Thornton, Michael Reilly Burke, Monica Keena, Todd Babcock