House: Season 6, Episode 4

6 - 4: Instant Karma

The team treats a controversial African politician named Dibala (James Earl Jones) who has fallen ill while coming to America to give a speech at the United Nations. Meanwhile, Wilson tries to make amends with a feuding neighbor. Fearing a planned genocide, Chase purposely mixes up the blood tests with that of a body in the morgue, causing Dibala to be treated for the wrong illness. The dictator is killed, leaving Chase and Foreman guilty for the rest of the series.