Sherlock Holmes. And his loyal dog. Tell me, Doctor … as a medical man, have you enjoyed my work?

Let me show you just how much I've enjoyed it. [starts walking towards Blackwood]

Watson, don't!

[Holmes stops Watson a few feet from Lord Blackwood, then looks at Blackwood's hands]

Observe …

[Watson looks down, to see there is an almost imperceptibly thin glass dagger with a sharp point less than a foot from where they stand]

How did you see that?

Because I was looking for it.
[Holmes uses his batons to shatter the dagger]