So it's safe to say an alien didn't explode out of his chest.

Junior [to Noelani]

Tani: You are so lucky that they brought you here. If the cops got involved ...
Koa: I know.

Jessie: If I do this thing, am I going to end up dead?
Adam: I won't let that happen. I'll protect you.
Jessie: Well, Noshimuri. You've got yourself a CI.

Tani: Brothers from another mother.
McGarrett: That's true.

McGarrett: I guess we'll call that a draw.
Tani: If you call coming in four yards behind me a draw, sure.

How does this happen?

Junior [to Tani]

Everyone deserves to know what happened. Don't take that with you.

Grover [to Brad]

I've been where you are, and I know the most important thing is to have someone in your corner.

Grover [to Brad]

[The guilt] just doesn't go away, man, but you do learn to live with it.

Grover [to Brad]

Will: I really didn't do anything.
Grover: You did, more than you know.

God gave you two ears and one month. You ever wonder why?

Grover [to Will]

You approach a member of my team again without my knowledge, and our conversation isn't going to be nearly as pleasant.

McGarrett [to FBI Agent Fischer]

Hawaii Five-0 Quotes

I just wanted to tell you I'm so sorry, so sorry.

Danny [to Marie]

Dealer: Game's closed unless you have an invitation.
Grover [holding up his badge]: Here's my invitation. It's even engraved.