Casting de l'épisode 4

Ellen Pompeo Meredith Grey

Chandra Wilson Miranda Bailey

James Pickens Jr. Richard Webber

Caterina Scorsone Amelia Shepherd

Camilla Luddington Jo Wilson

Jason George Ben Warren

Chris Carmack Atticus Lincoln

Anthony Hill Winston Ndugu

Adelaide Kane Jules Millin

Alexis Floyd Simone Griffith

Niko Terho Lucas Adams

Harry Shum Jr. Benson 'Blue' Kwan

Trevor Jackson Wes Bryant

Guests de l'épisode 4

• Abigail Marlowe Tracie Pearson
• Elizabeth Ramos Veronica Velasco
• Gordon James Nurse Gregory
• Jennifer Landon Toni Wright
• Katherine Kamhi Ryann Pearson
• Kyra Adams Desi
• Lily Yin Chelsea Beaton
• Miguel 'Miguel' Velasco Mateo Gonzalez
• Onye Eme-Akwari Amari Kemp
• Raquel Horsford Group Leader
• Russell Wong Mr. Kwan
  Sarah Levy Corrie
  Telma Hopkins Lilian Kemp
  Tiffany Daniels Khadijah Kemp
  Vincent Rodriguez III Grant de Vera