Grey's Anatomy — Season 4, Episode 15

• 
  Ellen Pompeo
  as Meredith Grey
• 
  Chandra Wilson
  as Miranda Bailey
• 
  James Pickens Jr.
  as Richard Webber
• 
  Caterina Scorsone
  as Amelia Shepherd
• 
  Camilla Luddington
  as Jo Wilson
• 
  Kevin McKidd
  as Owen Hunt
• 
  Kim Raver
  as Teddy Altman
• 
  Jason George
  as Ben Warren
• 
  Chris Carmack
  as Atticus Lincoln
• 
  Anthony Hill
  as Winston Ndugu
• 
  Adelaide Kane
  as Jules Millin
• 
  Alexis Floyd
  as Simone Griffith
• 
  Niko Terho
  as Lucas Adams
• 
  Harry Shum Jr.
  as Benson 'Blue' Kwan
• 
  Trevor Jackson
  as Wes Bryant

• 
  Brooke Smith
  as Erica Hahn
• 
  Cress Williams
  as Tucker Jones
• 
  Amy Madigan
  as Katharine Wyatt
• 
  Lauren Stamile
  as Nurse Rose
• 
  April Grace
  as Greta's Sister
• 
  Jeffrey D. Sams
  as Andre Barrett
• 
  Paul Dooley
  as Dr. Walter Tapley
• 
  Regina Taylor
  as Greta
• 
  Elizabeth Reaser
  as Rebecca Pope
• 
  Bruce Purcell
  as Patient (uncredited)

Director:
James Frawley

Writer:
Debora Cahn