To push the crime rate below one percent for the rest of the year, the New Founding Fathers of America test a sociological theory that vents aggression for one night in one isolated community. But when the violence of oppressors meets the rage of the others, the contagion will explode from the trial-city borders and spread across the nation.

Season seven follows Dexter's tangles with a Ukrainian mob boss and introduces Hannah McKay, a mysterious widow with a green thumb and a checkered past.

Season six follows Dexter's and Miami Metro's investigations into a string of bizarre ritualistic killings featuring overtly religious apocalyptic symbolism.

In season five, Dexter comes to terms with the aftermath of the Season 4 finale, stopping a group of serial rapists and avoiding a corrupt cop who learns his deadly secret.

Dexter as a father and husband struggles to figure out how to survive for years to come. He seeks to learn from Arthur Mitchell, a serial killer and family man, who has murdered for over thirty years without being discovered.

By day, mild-mannered Dexter is a blood-spatter analyst for the Miami police. But at night, he is a serial killer who only targets other murderers.