Mittell also uses the phrase “narrative special effect” to describe the complex narrative, which stems from Neil Harris’ idea of an “operational aesthetic.” The operational aesthetic is concerned with the “how” of a mechanical stunt, or the narrative mechanics in Mittell’s version. According to Mittell, narrative special effects call attention to the “constructed nature of narration” and invite the audience to marvel at the writers’ prowess (2006, p. 35). Narrative special effects used in Dexter include voice-over narration, breaking the fourth wall, and plot twists. Perhaps the biggest plot twist of the series was when Deb, Dexter’s adoptive sister, declared her love for Dexter. The twist came out of absolutely nowhere and propelled most of her following actions, providing a reason for why she wouldn’t turn Dexter in after learning what he was and serve as protection for him. Voice-over narration in the series serves to give the audience insight into Dexter’s head, as he is the only narrator, and this happens quite frequently. The fourth wall is broken a few times to give a nod to the audience that what is happening is, indeed, insane. For example, when Dexter is caught in the middle of his sister and his new girlfriend, who happens to also be a serial killer, he looks straight into the camera with a sort of “Oh, shit,” look.