S15, E17: Banfield and her husband look into adoption, while Carter adjusts to a changed ER. Sam's mother (guest star AMY MADIGAN) comes into the ER in an altered state of mind.
Judy Greer
Courtney B. Vance
Noah Wyle
Amy Madigan
Leland Orser
Shannon Woodward
Tony Hale
Justina Machado
Gil McKinney
Ariel Winter