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.
Altogether Now — Patrick & Eugene
Naked, annoyed Derek gets the $20 that Alex owes Izzie; Cristina, Mer, Callie, and Hahn move into the new apartment.
Bailey talks to Callie about setting boundaries and communication for physical intimacy; George bursts into the dermatology department and finds Christina, Meredith, and Izzie
George gets kid patient in scrubs to take him to see a surgery so he won't be afraid to have his own surgery; they walk in on "face off" patient and kid wants to stay & watch but George won't let him.
Izzie talks to a patient's wife; Izzie, Meredith and Cristina hangs out in dermatology department; Lexie and George find out he passed the intern exam.