Eerie patients arrived at the hospital on Halloween night on Grey’s Anatomy. One of them puts a doctor's welfare at risk.
Meanwhile, Derek and Ben teamed up for a new surgical procedure. Elsewhere, Richard requested that a second-year resident perform his surgery.
Meredith: Are you sure? There’s going to be a piñata. Callie: Shut up. Meredith: And pin the head on the skeleton. Callie: Damn it. They’re so cute when they’re blindfolded. Meredith: Bobbing for apples. Callie: They’re even cuter when they bob.