Meredith (Ellen Pompeo) and Derek (Patrick Dempsey) argue bitterly over their treatment of a paralyzed mountain climber, but that's not the real problem between them. Meanwhile, Izzie (Katherine Heigl) becomes convinced that her patient Duff (Kevin Rahm) develops psychic powers during his seizures; George (T.R. Knight) has difficulty intubating a patient while his peers are watching; and Orthodox Jewish teenager Devo(Sarah Hagan) refuses to allow Alex (ustin Chambers) to insert a life-saving pig valve in her ailing heart. As for Cristina (Sandra Oh), her plans to abort her unborn baby are altered after she becomes acquainted with Zoey (Joan McMurtrey), a middle-aged, pregnant cancer victim. ~ Hal Erickson, Rovi