All right, I admit it, I was watching Granada's SOLI just before I wrote this...
"Watson."
"Hmm?"
"Do put down the novel for a minute, old chap? This is reaching the crucial stage now, and you did say you wanted to see the reaction?"
I slapped the book down on the desk and seated myself eagerly at the table across from Sherlock Holmes, who was carefully measuring some bubbling concoction into a test tube.
"If this works, Watson, then Ferguson definitely is our man. Now observe closely."
Holmes bent over the tube, picking up a large phial and glancing at me. I nodded and held my breath, awaiting the results of the experiment.
My friend tipped the contents of the tube into the phial.
And then hastily dropped the container as a massive cloud suddenly billowed upward and began to spread throughout the room. I choked on the poisonous smoke and dragged Holmes over to the window which I hastily flung open.
Coughing from deep within my lungs, wheezing in a breath of foggy London air, I glanced at my gasping companion, who was clearing his throat of the noxious fumes.
"Is that what was supposed to happen?"
"Er, I don't think so, Watson. My apologies."
A sudden ringing floated up to us on the spring wind, and I smirked.
"Well done, Holmes."
"Oh, be quiet. Who was the idiot that called out the fire brigade?!"