Lost, Season 4

Martin Keamy:
I know you're down here, Ben. Crouching in the dark, just waiting to take a shot at me.

Pierre Chang:
[as Dr. Edgar Halliwax, on video] This... is "the vault"...

Martin Keamy:
Well, you better aim for the head, Ben! Not like your boyfriend who shot me in the back like a coward!

Pierre Chang:
...to avoid leaving inorganic materials inside...

Martin Keamy:
This body armor's, um, been known to take a bullet or two in its time. But before you take your shot, Ben, let me tell you about this. [revealing a device strapped to his arm] See that? I took out a bit of a--a life insurance policy, Ben. It's a heart rate monitor, and it's connected to a radio transmitter. W--we call it a "dead man's trigger", Ben. If my heart stops beating...it sends a little signal to the 500 pounds of C-4 that I've got hardwired out there on the freighter that'd kill a lot of innocent people, Ben. If you think I'm bluffing, need I remind you of, uh... how your daughter looked as she bled out? Face-down in the grass?

[Keamy hears a noise and whirls around to face Locke]

Martin Keamy:
Who the hell are you?

John Locke:
My name is John Locke, and I have no... conflict with you. And neither do the people on that boat. So... why don't you put your knife down? We can talk about this.

Martin Keamy:
Well, John Locke... I've never really been one for talk.

[Ben attacks Keamy from behind, knocking him to the ground with a baton and stabbing him multiple times in the neck]

Ben Linus:
You killed my daughter. You killed my daughter!

John Locke:
Ben! Ben! Ben, stop! No, no! Stop!

[Locke pulls Ben off Keamy]

John Locke:
Ben, what did you do?

[Keamy's device starts beeping]

John Locke:
You just killed everybody on that boat.

Ben Linus:
[beat] So?