Kelley Hazen

It becomes a bad day for Cristina when Bailey instructs her to take care of her baby. Meanwhile, Derek and Addison come to terms with their relationship, and Denny continues to be an obstacle in Alex's getting closer to Izzie.

Eric, Ari and producer Bob Ryan pitch a project to the studios; Drama is nervous on the first day of shooting his pilot.

Rochelle makes the family go to a social event, which leaves Chris with no time to study for the PSATS - so he resorts to cheating.

Mac spends her birthday dealing with a hostage crisis in Turkey and interviewing candidates for vice president.

When several healthy 11-year-old boys die of heart attacks, Dr Jacob Hood is called upon to determine the cause and prevent further deaths.