House — Season 4, Episode 2

• 
  Hugh Laurie
  as Gregory House
• 
  Robert Sean Leonard
  as James Wilson
• 
  Omar Epps
  as Eric Foreman
• 
  Jesse Spencer
  as Robert Chase
• 
  Odette Annable
  as Jessica Adams
• 
  Peter Jacobson
  as Chris Taub
• 
  Lo Mutuc
  as Chi Park

• 
  Peter Jacobson
  as Chris Taub
• 
  Olivia Wilde
  as Thirteen
• 
  Kal Penn
  as Lawrence Kutner
• 
  Carmen Argenziano
  as Henry Dobson
• 
  Essence Atkins
  as Greta Cooper
• 
  Edi Gathegi
  as Jeffrey Cole
• 
  Jonathan Sadowski
  as Dr. Mason, #10
• 
  Anne Dudek
  as Amber Volakis
• 
  Jason Manuel Olazabal
  as Dr. O'Reilly, #11
• 
  Heather Fox
  as Dr. Ashka, #2
• Kathryn Adams
  as Young Doctor, #23
• 
  Larkin Campbell
  as Dave
• 
  Meera Simhan
  as Dr. Jody Desai
• 
  Andy Comeau
  as Dr. Travis Brennan
• Bobbin Bergstrom
  as Nurse
• Melinda Dahl
  as Twin, #15a
• Caitlin Dahl
  as Twin, #15b

Director:
Deran Sarafian

Writer:
Leonard Dick
Doris Egan

Stunts:
Shaun Vickers

Editor:
Dorian Harris

Director of Photography:
Gale Tattersall