A team of doctors try to save the life of a political figure from the Middle East; Cristina decides to decorate her new place and throw a housewarming party; Alex shows up late to his first day of rounds with the new pediatrics attending.
Christy and Adam clash over an incident at the bar, leaving Bonnie in a precarious situation. Also, Jill’s new boyfriend, Andy (recurring guest star WILL SASSO), has trouble finding a way to impress her.
During the week of Halloween, a murderous psychopath taunts the team by using the Internet to leave clues to the next victim's identity.
J.D. tries to get Keith out of Sacred Heart in favor of a less competent intern he calls Cabbage, and Turk and Elliot lose a letter a patient had given them before he died.
With David Clarke back in the headlines and Victoria in control, Emily needs a new strategy to orchestrate a reunion with her father.