With Miguel out of the picture, Dexter’s focus shifts to calming his emotionally unstable brother, Ramon. Upon easing Ramon’s concerns, Dexter can finally breathe again. All that stands before him now is his wedding with Rita… until he’s met with yet another deadly surprise.

While preparing for his big wedding day, Dexter has to figure out a way to remove Miguel from his life for good.

Dexter finds himself in a series of chess-like moves against his former friend, all while hoping that Miguel doesn’t get the upper hand on him.

Dexter starts to fear that Miguel may have strayed from the newly taught Code. This concern starts to put a strain on their friendship.

Miguel brings Dexter another “project,” but this time he wants to get his hands dirty. Dexter realizes it’s time to teach Miguel the Code – for his own safety as well as Miguel’s.

Miguel offers Dexter a new potential victim, but after properly vetting her, Dexter isn’t sure she fits the Code. When he informs Miguel of this, he reacts with anger, making Dexter believe the new friendship is in danger.

Dexter grapples with what to do with his newfound friend, Miguel, who thinks he is clued in to Dexter’s vigilante ways.

While Dexter struggles with how to handle Rita’s desire for them to move in together before they get married, Miguel tells Dexter about a husband who has gotten away with killing two of his wives for financial gain.

After a botched marriage proposal, Dexter has to figure out how to convince Rita that he is looking for more than a convenient merger of finances and fatherhood. But Deb’s case of a woman’s murdered fiancée offers hope for Dexter in strange ways.

Dexter learns that Miguel Prado wants Dexter to be his friend. But just how smart is it for Dexter, a serial killer, to befriend an Assistant District Attorney?

Dexter and Rita have to make a big decision about their family, forcing Dexter to think about what it means to be responsible for kids. Meanwhile, Dexter and Assistant District Attorney, Miguel Prado, find themselves hunting down the same murderer.

When he sets his sights on Freebo, a dope dealer and killer, it looks to be just another night of Dexter’s dark justice. But things don’t go as planned and Dexter must find a way to extract himself from a pair of problems that he created, both in his home and night life.