On this week's Grey's Anatomy episode, Derek and April work around the clock to find a solution for the hospital, while Cristina struggles to respect the religious wishes of a family whose son is dying.
The episode title, "Bad Blood," takes on a literal meaning for the Jehovah's Witness patient, whose parents steadfastly won't allow any blood products to be used in his medical treatment.
Cristina appears to begrudgingly acquiesce to their concerns, but it looks like her intern, Tessa Ferrer's Leah, has other ideas and goes rogue, at least based on this sneak preview clip ...
Elsewhere, Arizona empathizes with a teenager who faces problems similar to her own, and Meredith feels a "flutter" that she thinks may be a sign that something isn't right with her pregnancy.
Watch another scene from "Bad Blood" and share your comments below: