- Wo Fat: One thing more... You're wondering if you can trust me to keep my word. I assure you, you can... I would genuinely hate to harm your child. But more important, in my profession, a man cannot afford a credibility gap. He must keep his promises if he wants anybody to believe his threats.
- Sam Kavanaugh: [Extends his hand] Good to see you again.
- Det. Steve McGarrett: OK, drop the glad hand... Why the freeze-out at the heliport?
- Det. Steve McGarrett: Well, since you're still a little new out here, Mr. Kavanaugh... Maybe no one has told you.
- Sam Kavanaugh: What?
- Det. Steve McGarrett: That not even United States intelligence can cover up a shoot out and tell me it's none of my business... Now I wanna know what's going on, and I wanna know now.
- Det. Steve McGarrett: [to security guard] A man is shot, wounded, maybe killed... And you don't notify Honolulu Police or Five-O?... Why?
- Sam Kavanaugh: [McGarrett wants to know what happened to the agent] Hey McGarrett, back off!... This does not concern Five-O!
- Det. Steve McGarrett: Now is that right?
- Sam Kavanaugh: That's right!
- Det. Steve McGarrett: [Talking about Agent Shepard] Sounds like an amateur talent.
- Sam Kavanaugh: I wish I had a few more just like him.
- Sam Kavanaugh: [about Agent Shepard] He dug us up a map showing the exact location of every missile silo Red China has built or is planning on building.
- Wo Fat: [to Mrs. Forbes] I'm sorry, Mrs. Forbes, but I'm just as much a victim of this situation as you, your husband, and the child!
- Wo Fat: [to Doctor Forbes] I know a little about your particular discipline, Doctor... Brain surgery is such a delicate matter.
- Det. Steve McGarrett: I think I found Wo Fat's pipeline... Ralston.
- Sam Kavanaugh: Ralston?
- Det. Steve McGarrett: Or you... Take your pick.
- Det. Steve McGarrett: Come on, Mr. Kavenaugh... Behind that cloak and dagger of yours, you can believe anything.
- Wo Fat: [to Doctor Forbes] What you refer to as "A thing like this" may well become a question of my country's survival.
- Sam Kavanaugh: [Last lines] Oh, we finally got squared off... Maybe we can get along together from now on.
- Det. Steve McGarrett: Yeah, I'd like that.