Episodes Summary: Rick and the rest of the remaining gang who have survived the onslaught of the zombie attacks have been allowed to enter into the CDC by a mysterious doctor. But he may not seem what they think he seems, as the new found haven may not exactly be as safe as they thought it is.What is TS-19? Will Rick find out what happened to Morgan and Duane? So who will be able to survive to make it next season? Or they will be all killed when you Watch Walking Dead Season 1 Episode 6 online? You have to catch it to know it. An odd physician lets the refugees into the Center for Disease Control.