which ladies call a
handkerchief--an article whose cost is out of all proportion to its
usefulness. Gabrielle, who was watching him keenly as he examined it,
exclaimed:

"The handkerchief--a box of them--were given me by Sir Horace because he
knew I love pretty things."

She laid a finger on the missing corner, which might indeed have been
torn off in the manner described. A scrap of the lace was missing, and it
was evident that it had been removed with violence, for the lace around
the gap was loosened, and the muslin slightly frayed.

"You say that the corner was torn off when you wrenched the handkerchief
from the dead man's hold?" said Crewe. "But it was not found in his hand
by the police or anyone else. And he was not buried with it, for I
examined the body carefully. What became of it?"

Gabrielle looked at him quickly as though she suspected some trap.

"You would play with me," she said at length. "What became of it? Why,
you must surely know that the police of Scot--Scotland Yard have it. The
police agent who called on Madame had it. What is his name--Rudolf?"

"Rolfe?" exclaimed Crewe. "Has he got it?"

"Yes," she replied. "He did not show it to me, but I saw it nevertheless.
I dropped my handkerchief when I spoke at the telephone and Monsieur
Rolfe picked it up. Quickly he studied my handkerchief--not this one,
monsieur, but one of the same kind--and from his pocket-book he took out
the missing piece that was in the dead man's hand and he studied them
side by side. He thought I did not see--that my back was turned--but I
saw in the mirror which hung on the wall. Then, when I finished my
telephone, he bowed and said, 'Your handkerchief, mademoiselle.' It was
not so badly done--for a clumsy police agent."

She was not able to recognise how keen was Crewe's interest in her
statement, but she saw that she had pleased him.

"It is because of this that he will come again," she continued. "It is
because of this that he would question Madame Holymead. And then what
will happen? I do not know. The police make so many mistakes--blunders
you English call them. Would they arrest her with their blunders? That is
why I come to you to ask you to save her."

"May I have the revolver and the handkerchief?" asked Crewe. "I will take
great care of them."

"They are at your disposal, for you will use them to confront the
police agent."

Crewe again examined the articles in silence before taking them to his
secret