Dexter, Season 8

Dr. Vogel:
LaGuerta. She was on her knees, where those blood stains are, isn't that right? She was your co-worker, your friend. Why didn't you just stay at the party and let Dexter take care of everything?

Debra:
I had to stop him.

Dr. Vogel:
But Dexter can't help what he is. He has no conscience, unlike you. You knew the moment you pointed that gun at LaGuerta it was wrong, and still, you pulled the trigger. You shot a woman in cold blood! You let her bleed out and did nothing! You shot an innocent woman for simply doing her job!

Debra:
Because of Dexter!

Dr. Vogel:
And that's what terrifies you the most. You so desperately want to believe that if you had just shot Dexter, then you wouldn't have to face the truth, that if you had to do it all over again you'd still choose him. Because in your heart, you know you'll always choose Dexter.

Debra:
[quietly] How do I make it right?

Dr. Vogel:
By finally accepting that you're a good person who was forced to do a terrible thing. And that you made the best of an impossible situation. You can walk out that door. You can move forward. The choice is yours. It always has been.