Dexter suffers after the revelation that he killed an innocent man (Jonathan Farrow) after lacking sufficient evidence to support his guilt; Quinn becomes suspicious of Dexter. Debra, after being thrown off of the Trinity case for she was officially a “victim” of Trinity, starts back-seat driving the investigation through Quinn; later, after Masuka and Deb figure out that the shooter was too short to be Trinity himself, Deb is put back on the case. Dexter accompanies Arthur Mitchell to Tampa on a build (or attending a Weather Conference, as he tells everyone); he admits to Trinity that he killed an innocent man, leading to the revelation that Trinity also was responsible for the death of an innocent person. Rita accidentally kisses Elliot next door. Dexter spends Thanksgiving with the Mitchells. Ultimately, we discover that Christine Hill is Trinity’s daughter( gasp!).