Board Thread:Questions and Answers/@comment-7411320-20130324045348/@comment-33030488-20171127183754

My take on the timeline for the day of Rita’s death: In the early morning, Arthur leaves home before his family is awake. (They told this to Dexter.) By now, Arthur knows, or will shortly learn, Dexter’s correct address. Rita and Harrison say goodbye to Dexter as they depart for the airport. Dexter immediately continues his hunt for Arthur, and his first stop is the Mitchell house. At some point, Rita returns home for her forgotten I.D. While Dexter is at the Mitchell home, the police conduct a raid there and he initially hides in the garage. It is during the raid that Rita is murdered, according to the FBI in "Hello Bandit." Dexter realizes that Arthur’s Mustang is in a body shop. From an invoice in Arthur’s stolen wallet, Dexter learns the location of the shop and sabotages Arthur’s car by removing its oil cap. When Arthur picks up his car (after he kills Rita), Dexter follows him until it breaks down. He then captures Arthur and takes him to a kill room in the bomb shelter. Arthur now knows that Dexter is a serial killer, not an extortionist. After Dexter disposes of Arthur’s body in the Gulf Stream, he returns home to find Rita in the bathtub - murdered.