Grey's Anatomy › Season 5

S5 E4: Brave New World

Meredith is sent into a state of panic when Derek finds her mother's diary in the house. Meanwhile, Callie stresses while preparing for her first date with Erica. Later, Cristina stumbles across a part of the hospital no one has ever seen before.

Air date	Oct 16, 2008
Runtime	43 minutes
TMDB rating	★ 8.1/10