Dexter, Season 6

Dexter:
Sam. I'm here. Don't worry. I know it was Nick who shot you. I'm gonna make sure he pays.

Brother Sam:
No. Don't do that.

Dexter:
I don't understand.

Brother Sam:
I want you to...to give a Nick a message from me.

Dexter:
Yes.

Brother Sam:
Tell him that I forgive him.

Dexter:
What?

Brother Sam:
You're the only one that I trust to do it. I didn't tell anybody. The boys from the shop, they wouldn't... They... They're not ready.

Dexter:
You're wrong, I can't do this.

Brother Sam:
You can.

Dexter:
You don't know me.

Brother Sam:
Yes, I do. I know about your darkness. But I also see your light.

Dexter:
If there's light in me, I don't feel it. I just wanna hurt Nick. You don't know how much I wanna hurt him.

Brother Sam:
You need to forgive him.

Dexter:
I don't know how.

Brother Sam:
Just let it go. Can't live with the hate in your heart. Eat you up inside. We gotta find some peace in life.

Dexter:
Nick doesn't deserve it.

Brother Sam:
It ain't about him. Dexter, if you don't let that darkness go, it won't let go of you. Let it go. Let it go.