Rhomeyn Johnson

After a successful operation on his heart, George's father undergoes surgery for his cancer, Thatcher Grey visits Seattle Grace in order to see his new granddaughter, and Meredith discovers that Derek has trouble sleeping soundly. This is Part One of a two-part episode.

Lily and Marshall tire of Ted's intrusion on their personal space and look for a new flat, and Marshall is delighted when he falls in love with the first flat he sees. Lily can't share in Marshall's joy because she knows they won't be able to afford it because of her hefty credit card bills.

Leslie and Ben organize a black tie gala to raise money for their park, but their plans are derailed when a city-wide emergency response drill is called.

The clock is ticking -- Leslie and Ben have two hours to complete a years-long project.

On a trip to the zoo, the family bump into one of Lois's old boyfriends, who lectures on rain-forest wildlife. Malcolm and Dewey get trapped in a tiger pen, and Reese goes head-to-head with a goat.