from "The Adventure of the Three Garridebs":
[Holmes:] “This is a more serious matter than I had expected, Watson,” said he. “It is fair to tell you so, though I know it will only be an additional reason to you for running your head into danger. I should know my Watson by now. But there is danger, and you should know it.”
[Watson:] “Well, it is not the first we have shared, Holmes. I hope it may not be the last. What is the particular danger this time?”
[Holmes:] "I have been down to see friend Lestrade at the Yard. There may be an occasional want of imaginative intuition down there, but they lead the world for thoroughness and method."
[Dramatic showdown incl. slashy goodness:]
In an instant he [Killer Evans] had whisked out a revolver from his breast and had fired two shots. I felt a sudden hot sear as if a red-hot iron had been pressed to my thigh. There was a crash as Holmes’s pistol came down on the man’s head. I had a vision of him sprawling upon the floor with blood running down his face while Holmes rummaged him for weapons. Then my friend’s wiry arms were round me, and he was leading me to a chair.
“You’re not hurt, Watson? For God’s sake, say that you are not hurt!”
It was worth a wound–it was worth many wounds–to know the depth of loyalty and love which lay behind that cold mask. The clear, hard eyes were dimmed for a moment, and the firm lips were shaking. For the one and only time I caught a glimpse of a great heart as well as of a great brain. All my years of humble but single-minded service culminated in that moment of revelation.
“It’s nothing, Holmes. It’s a mere scratch.”
He had ripped up my trousers with his pocket-knife.
“You are right,” he cried with an immense sigh of relief. “It is quite superficial.” His face set like flint as he glared at our prisoner, who was sitting up with a dazed face. “By the Lord, it is as well for you. If you had killed Watson, you would not have got out of this room alive. Now, sir, what have you to say for yourself?”