Grey's Anatomy: Season 6, Episode 19

6 - 19: Sympathy for the Parents

Meredith and Derek begin to discuss having a child, while Teddy and Mark have sex for the first time. Alex's brother comes to visit, which reveals many of Alex's secrets, much to the delight of Bailey and to the annoyance of Alex. Lexie begins to notice that Dr. Kepner is developing a crush on Derek. Dr Webber, Lexie and Derek are faced with a patient that will come to change their lives forever