Dim, noisy, chaotic, drunken, and not far off, writhing bodies pale in the dim light.
Any one of these elements could make anyone lose the ability to perceive their surroundings, and when combined, it's possible that a gunshot nearby could be ignored.
Not to mention the thin crack that quietly appeared, less than a centimeter wide, and the sharp spike that suddenly shot out of it.
However, in that instant, Sherlock's blurry gaze didn't change, his expression remained the same, but he naturally tilted his head to the side just a bit.
At the same time, with a "snap!" a glass hit the spike that had suddenly appeared solidly, shattering into fragments. The spike immediately retracted back into the crack and disappeared without a trace.
Sherlock turned his head in slight surprise, looking at Watson, and found that the other was looking back at him with the same expression.