Episode Simple Explanation Adaptation: House MD Episode: 5x20 Airdate: 06 April 2009 IMDb: Simple Explanation (link not verified) Previous: Locked In Next: Saviors Cast Hugh Laurie as Dr. Gregory House Robert Sean Leonard as Dr. James Wilson Bob Ross as Connor Allen Liz Benoit as Nurse Anne Hart Boykin as Arthur Jennifer Morrison as Dr. Allison Cameron Colleen Camp as Charlotte Jesse Spencer as Dr. Robert Chase Lisa Edelstein as Dr. Lisa Cuddy Meat Loaf as Eddie Omar Epps as Dr. Eric Foreman Olivia Wilde as Dr. Remy 'Thirteen' Hadley Mary Jo Deschanel as Julia Debbie Campbell as Katherine Bobbin Bergstrom as Nurse Tommy Bechtold as Pallbearer Bob Rusch as Phil Sherrie Lewandowski as Phil's Wife Senta Burke as Private Nurse Roger Narayan as Pundit Ed Brigadier as Richard Taylor Hardick as Rosabel Peter Jacobson as Dr. Chris Taub Christopher L. Antie as Visitor