Dexter, Season 8

[In flashback]

Dexter:
[holding a newborn Harrison] I don't know how to do this.

Debra:
Just keep his head up.

Dexter:
No, I mean everything. How to be a father, how to take care of him.

Debra:
You'll be great.

Dexter:
How do you know?

Debra:
Because you've always taken care of me.

Dexter:
I have?

Debra:
Ever since we were little. Don't you remember the monsters?

Dexter:
Uh, no.

Debra:
Every time Mom turned off the lights, they'd be running all over the walls. I couldn't fucking go to sleep. I thought they were gonna eat me or something.

Dexter:
I don't remember.

Debra:
They were the shadows. You came in and explained it in your dorky little voice. "Oh, it's just the absence of light, Deb."

Dexter:
Heh.

Debra:
I don't even know why I remember that, but I do. And even then, you stayed in my room and slept on the floor by my bed. You made me feel so fucking safe. You were always taking care of me. You're gonna be a great father, because you've always been a great big brother.

Dexter:
You really believe that?

Debra:
With all my heart.