"He was murdered by de Socotra's orders."

"Of course! But have you the proof? Can we bring it home to that damned cold villain?"

"With your help I think we can."

"Ah, if that is so," cried Estuban, "if we can smash that devilish ring, my poor master has not died quite in vain! When did it happen?"

"The night he landed; in a cab on his way from the pier."

Estuban looked puzzled. "But if that is so, how is it he is registered here? The hotel clerk told me——"

"It is de Socotra who is registered here under his name."

"What is that for?" murmured Estuban blankly.

"I hoped you could explain," said Greg.

Estuban slowly shook his head. "Has the crime been reported to the police?" he asked.