Official photos from this episode.

#23 “Walking on a Dream”

From ABC: “The Seattle Grace doctors are on edge when a new medical professional enters the hospital; Arizona struggles with the emotional and physical pain of a phantom limb; and while battling pregnancy hormones, an overly-emotional Meredith is confronted with her worst fear.”

#22 Meredith and Cristina

#21 Talking to Bailey

#20 Why So Serious?

#19 Dr. Miranda Bailey

#18 The O.R.

#17 A Transplant

#16 Intern Jo Wilson

#15 Writing on the Big Board

#14 Guest Star Constance Zimmer as the New Doctor

Zimmer previously starred on Boston Legal and Entourage.

#13 The New Doc Causes Drama

#12 The New Doc vs. The Old Chief

#11 Dr. Richard Webber

#10 What Are They Looking At?

#9 Dr. Owen Hunt

#8 Owen Deals with the New Doc

#7 What Is She Up To?

#6 Owen and the New Doc

#5 Observing a Surgery

#4 Behind the Scenes of This Episode

#3 Arizona’s Leg

#2 Leg on the Table

#1 Constance Zimmer on the Set