"Yes, the Czarina's diamonds," repeated the man with the black tie.
"It was a necklace of diamonds. I was told to take them to the Russian
Ambassador in Paris who was to deliver them at Moscow. I am a Queen's
Messenger," he added.

"Oh, I see," exclaimed Sir Andrew in a tone of relief. "And you say
that this same Princess Zichy, one of the victims of this double
murder, endeavored to rob you of--of--that cigar-case."

"And the Czarina's diamonds," answered the Queen's Messenger
imperturbably. "It's not much of a story, but it gives you an idea of
the woman's character. The robbery took place between Paris and
Marseilles."

The Baronet interrupted him with an abrupt movement. "No, no," he
cried, shaking his head in protest. "Do not tempt me. I really cannot
listen. I must be at the House in ten minutes."

"I am sorry," said the Queen's Messenger. He turned to those seated
about him. "I wonder if the other gentlemen--" he inquired
tentatively. There was a chorus of polite murmurs, and the Queen's
Messenger, bowing his head in acknowledgment, took a preparatory sip
from his glass. At the same moment the servant to whom the man with
the black pearl had spoken, slipped a piece of paper into his hand. He
glanced at it, frowned, and threw it under the table.

The servant bowed to the Baronet.

"Your hansom is waiting, Sir Andrew," he said.