16. Chuck Versus the Tooth

Complete story — includes the ending

Chuck struggles with disturbing dreams and believes his most recent dream predicts danger for the President of Zamibia, who is visiting the country. General Beckman, however, is unconvinced and assigns Chuck to meet with a CIA psychiatrist Dr. Leo Dreyfus ( Christopher Lloyd ). Meanwhile, Ellie and Devon have returned from Africa, due to the Devon contracting a disease resembling malaria. It was revealed that a Ring operative named Justin, posing as a ranger in Africa, deliberately infected Devon with the disease, in order to secretly coerce the couple into returning to the USA. Justin then surprises Ellie when appearing at the Buy More, and tells her that he is a CIA agent working to protect her father, Stephen Bartowski, from John Casey. He tells Ellie that John is a dangerous NSA agent, and uses her to lure Stephen out of hiding in order to carry out The Ring's agenda. Anna Wu ( Julia Ling ) returns to the Buy More to try to get Morgan back. It is revealed that the Intersect 2.0 puts stress on Chuck's brain that promotes mental deterioration.