Grey's Anatomy — Season 4, Episode 13

• 
  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

• 
  Kate Walsh
  as Addison Montgomery
• 
  Brooke Smith
  as Erica Hahn
• 
  Clea DuVall
  as Jennifer Robinson
• 
  Gloria Garayua
  as Intern Graciella
• 
  Amy Madigan
  as Katharine Wyatt
• 
  Lauren Stamile
  as Nurse Rose
• 
  Elizabeth Reaser
  as Rebecca Pope
• 
  Richard Keith
  as Intern Mitch
• 
  Jason O'Mara
  as Phillip Robinson
• 
  John O'Brien
  as Lab Tech Jeffrey
• Molly Kidder
  as Intern Megan
• 
  Winston Story
  as Intern Leo
• 
  Tymberlee Hill
  as Intern Claire
• 
  Joy Osmanski
  as Intern Lucy
• 
  Kathleen Rose Perkins
  as Sarah
• 
  Ken Barnett
  as Freddie
• 
  Sam Daly
  as Will
• 
  Meg Cionni
  as Nikki

Director:
Mark Tinker

Writer:
Stacy McKee