Derek faces his first big challenge as interim chief when Meredith and Bailey's patient awakens mid-surgery and the impending lawsuit threatens the hospital. Alex returns to Pediatrics, where he is tested by Arizona, while Teddy refuses to let Cristina on her service. Meanwhile, Mark continues to ignore a heartbroken Lexie.

CTV CA | February 4, 2010

Tags:. .interim. .heartbroken. .lexie. .pediatrics. .lawsuit