Sherlock, Series 2

John Watson:
Paramedics. Mrs Hudson - she's been shot.

Sherlock Holmes:
What? How?

John Watson:
Well, probably one of the killers you managed to attract... Jesus. Jesus. She's dying, Sherlock. Let's go.

Sherlock Holmes:
You go. I'm busy.

John Watson:
Busy?

Sherlock Holmes:
Thinking. I need to think.

John Watson:
You need to...? Doesn't she mean anything to you? You once half killed a man because he laid a finger on her!

Sherlock Holmes:
She's my landlady.

John Watson:
She's dying... You machine. Sod this. Sod this. You stay here if you want, on your own.

Sherlock Holmes:
Alone is what I have. Alone protects me.

John Watson:
No. Friends protect people.