Dr. Watson

We know of your proposed investigation of the tenant in the first floor back at 14 Kensington Garden Square.

We warn you, as you value your life, keep away from... We warn you, as you value your life...

to keep away from the case.

And that, my dear Watson, is why we are driving towards 14 Kensington Garden Square disguised as building inspectors of the London County Council.

Well, I must say, it's a very challenging letter, Holmes.

Unsigned, I noticed.

Written on cheap notepaper and in a disguised hand.

No clue where, I'm afraid.

Well, we're... we're entering the square, Holmes.

Yeah.

Let's stop the cab here.

You can drop us here, cabbie.

It would seem a little incongruous in these costumes for us to arrive in a cab.

Yes, I suppose so.

Here you are, Kebby.

Supposing this mysterious tenant to the first floor back should be in his room when we get there?

We must hope that his guises are convincing and keep our wits about us.

This may be a trap.

Yes, just what I was going to say.

After all, you've never heard of 14 Kensington Gardens until you received an unsigned letter two hours ago warning you to keep away from it.