Captain Holt: I'll ask Commissioner Kelly to approve your initial request for an FBI lab team.
Rosa: That won't be necessary. I solved the case. And the flies actually came in handy.
[cut to Rosa with a perp in the interrogation room:]
Rosa: These have been genetically engineered to detect blood, and there's a whole swarm of them at your apartment right now with Dr.Ronald Yee. The flies don't lie.
[now:]
Rosa: He confessed immediately.

Rosa: I want to say a few words. When Jason died seven days ago, I didn't give a rat's ass.
Charles: This is your speech?
Rosa: 'Cause I didn't understand why people care so much about their dumb dogs till I got a dumb dog myself. I've only had Arlo for a day and a half, but if anything happened to him, I would kill everyone in this room and then myself.
Gina: Very violent eulogy, I like it.

Rosa: Hey, you should run. Going to meetings, writing stuff down. You love that nerd stuff.
Amy: Writing stuff down is nerdy? What do you do?
Rosa: I just forget stuff like a cool person.

Sergeant Jeffords: Wait, is that a smile I see?
Rosa: Possibly. My immune system is too weak to fight off my smile muscles.

Gintars: It's gift for Nikolaj.
Charles: Nikolaj?
Jake: How do you know Charles's son?
Gintars: My name is Gintars. From Latvia. I am Nikolaj birth father.
Charles: Ohh! Nikolaj's birth father who I'd never hope to meet. Very cool. Cool, cool, cool, cool, cool, cool, cool, cool, cool, cool, cool, cool, cool, cool, cool, cool, c-c-c-c-c [passes out]

Dr. Ronald Yee: The flies don't sense blood. They're just regular flies.
Amy: But, Dr. Yee, you can't be a fraud. You gave a TED Talk.

Amy: What are you saying out of your weird face?
Rosa: We put the flies near fresh blood, and nothing happened. They didn't react at all.
Captain Holt: Do you know how stupid these accusations sound? Diaz, you're fired.
Rosa: What?
Amy: Dr. Yee is one of the most respected forensic experts in the country.
Captain Holt: For you two - let's not mince words - common fools to suggest that you found the flaw in this brilliant man's-
Dr. Ronald Yee: They're right.