You Don't Know What You've Got Till It's Gone

Sinopse

Sheldon fears the worst when a little girl goes missing from the ER; Addison and Jake have a disagreement about one of his patients; and a new doctor joins the team at Saint Ambrose. Meanwhile, Stephanie questions Sam about his past with Addison.

Elenco convidado

Kylie Rogers

Sarah Nelson

Matt Long

James Peterson

Tisha Campbell

Pam Reiter

Carter MacIntyre

Nick Calhoun

Justina Machado

Stephanie Kemp

Missy Yager

Megan Stewart