Meanwhile, Dexter learns that his girlfriend Rita is pregnant, he initially does not know what to process. Rita's demands on the part he dodges, and speak almost no rational reasons to keep the child. Rita confronted him but the fact that she was determined to get the baby because she had indeed made many mistakes, but to be a single mother, no one would have been. It leaves Dexter, what role he would play for the child, and he is poised to opt for wanting to be a father because he feared that his child will like him: a monster. Only his sister Debra Dexter can convince them to face the perils of fatherhood. When Dexter is in his safe, he makes Rita a subordinate clause in a marriage proposal, which she refuses blankly. Even further demand Rita Dexter rejects because it does not 'real' is and she and Paul got married because of pregnancy. It takes a whole drama Dexter, Rita finally convince by means of a stirring speech to marry him.
Debra is focused in the course of the season almost exclusively on their work, as they necessarily - would like to reach her father - a promotion to Detective. The case is their awkward freebo because of a statement that Oscar Prado was a drug addict deprived. It works to help with a new partner Quinn together in a series of gruesome murders that go into the account of the "skins". Debra is in their work overshadowed by the skins, which mimics their contacts, cruelly tortured and murdered. Debra also begins an affair with Quinn's informant Anton. The skins kidnapped Anton, tortures him and holds him prisoner in a remote cabin. However, the skins will be provisionally arrested, but since one has no proof, it must be again set free and he dives under. Debra and Quinn manages to free Anton. Since Anton is now an important witness in their case, Debra preliminarily concluded her affair with him, but eventually abandoned the case, we can finally be together with Anton. It will matter still promoted to Detective.
Meanwhile, Miguel discovers Dexter's dark secret. However, he does not turn from Dexter, but actively supports them, which ultimately culminates in a jointly committed murder. Dexter Miguel tries to suggest Harry's Code. When the attorney Wolf Ellen disappears without a trace, Dexter is soon fixed that Miguel has only used him. Miguel asked in the past Dexter about to murder her. He refused to do so with reference to its strict Code, to which Miguel responded very angry and abusive. Dexter suspects Miguel, and he makes her body then locate in a freshly dug grave. Dexter begins to doubt everything Miguel has ever said to him, and it shall include finds that the blood on Miguel's shirt, which was given him their confidence, not freebo is, but of animal origin. Then starts a cat and mouse game between Dexter and Miguel, where it initially Dexter comes to teach Miguel. He soon realizes that access is only played by Miguel, which is why he comes to the conclusion to kill him. He makes the murder of Miguel look like he had been committed by the skins. However, Miguel has already hired the skins to Dexter off. He kidnapped Dexter on the day before his wedding, but it can free itself Dexter, where he broke his right hand. In the ensuing fight breaks Dexter hides the neck and drops him to a police car drive up, making his death appear like suicide. Dexter flees from the scene and go to his wedding. He married Rita with the loyalty oath to be the best husband and father, he could be.
