“What say you, Watson?  Can you rise superior to the heat and run down to Croydon with me on the off chance of a case for your annals?”

“I was longing for something to do.”

“You shall have it then.  Ring for our boots and tell them to order a cab.  I’ll be back in a moment when I have changed my dressing-gown and filled my cigar-case.”

A shower of rain fell while we were in the train, and the heat was far less oppressive in Croydon than in town.  Holmes had sent on a wire, so that Lestrade, as wiry, as dapper, and as ferret-like as ever, was waiting for us at the station.  A walk of five minutes took us to Cross Street, where Miss Cushing resided.

It was a very long street of two-story brick houses, neat and prim, with whitened stone steps and little groups of aproned women gossiping at the doors.  Halfway down, Lestrade stopped and tapped at a door, which was opened by a small servant girl.  Miss Cushing was sitting in the front room, into which we were ushered.  She was a placid-faced woman, with large, gentle eyes, and grizzled hair curving down over her temples on each side.  A worked antimacassar lay upon her lap and a basket of coloured silks stood upon a stool beside her.

“They are in the outhouse, those dreadful things,” said she as Lestrade entered.  “I wish that you would take them away altogether.”

“So I shall, Miss Cushing.  I only kept them here until my friend, Mr. Holmes, should have seen them in your presence.”

“Why in my presence, sir?”

“In case he wished to ask any questions.”

“What is the use of asking me questions when I tell you I know nothing whatever about it?”

“Quite so, madam,” said Holmes in his soothing way.  “I have no doubt that you have been annoyed more than enough already over this business.”

“Indeed I have, sir.  I am a quiet woman and live a retired life.  It is something new for me to see my name in the papers and to find the police in my house.  I won’t have those things I here, Mr. Lestrade.  If you wish to see them you must go to the outhouse.”

It was a small shed in the narrow garden which ran behind the house.  Lestrade went in and brought out a yellow cardboard box, with a piece of brown paper and some string.  There was a bench at the end of the path, and we all sat down while Homes examined one by one, the articles which Lestrade had handed to him.

“The string is exceedingly interesting,” he remarked, holding it up to the light and sniffing at it.  “What do you make of this string, Lestrade?”

“It has been tarred.”

“Precisely.  It is a piece of tarred twine.  You have also, no doubt, remarked that Miss Cushing has cut the cord with a scissors, as can be seen by the double fray on each side.  This is of importance.”

“I cannot see the importance,” said Lestrade.

“The importance lies in the fact that the knot is left intact, and that this knot is of a peculiar character.”