Grey's Anatomy: Season 5, Episode 9

In the Midnight Hour

Izzie relives her passionate love to Denny and Mark discovers that he has feelings for Lexie. The interns open up Sadie to remove her appendix, but when things get complicated, they have to approach Cristina and Meredith for help. When the chief finds out about the appendix operation, tensions flare between Cristina and Meredith.