Fringe, Season 5

Olivia:
Where did you get that?

Etta:
I found it in our old house on Quincy Street. I wanted to remember things. I don't know. I just wanted to be there. It made me feel closer to you. It was looted; the entire block was. Upstairs in your bedroom, what used to be your bedroom, I found what was left of your old jewelry box. There was this matchbook inside and I shook it. Inside I found this. I figured it had to be important or you wouldn't have kept it.

Olivia:
How long have you been wearing it?

Etta:
Since I was thirteen. You want it back?

Olivia:
No, no. I want you to keep it. Let me see it. [smiles] You know, your father used to call this the bullet that saved the world.