Hoimes unfolded the note care fully and spread it on his knee. He look a magnifying glass out of his pocket and examined the paper. this paper was made iadia; heremarked. hare a look at it 'watson. I took the note and studied it carefully. the paper was thin and old. It looks like the plan of a large, I said .But what are these names at the bouttom? And what is the meaning of-the sign. of Four? I don't understand what this note means! said holmes. But il might be important. there were many people outside the theatre. the letter had told us to stand outside on the left. we waited. suddenly a small dark man appeared. and you miss morstan and her friends? he ash ed . yes,she said. you must promise me thet these men are not policemen; said the stranger. they are not policemen; replied miss mortan.