Dexter Scoop: How Does Deb's Admission Change Everything?

Every season of Dexter has been about its titular serial killer trying really hard to keep his secret. This year, however, it's his sister Deb who has a secret: Not only does she love her brother, but she's in love with him. (As she said, he's the serial killer, and she's more messed-up!) Well, that secret is finally out, so now what comes next? How will Deb's ( Jennifer Carpenter ) admission change their dynamic?

Dexter Episode Preview: A Surprise Visit

Following events on " Chemistry ," Dexter is officially sleeping with the enemy. Deb's enemy, at least. How will he react to his sister's missive on tonight's new episode? Look for Dexter's attempt to keep his relationship with Hanna a secret to be compromised when he receives a surprisine visit from Astor, Cody and Harrison. Meanwhile, Isaak is out of jail and also hot on Dexter's trail, while Quinn continues to battle the Koshkas. Watch the official Showtime teaser now: