At ten o'clock at night, sirens were sounding in the mountains. Two police cars stopped in front of a villa. The policemen showed their certificates and said, "We have been reported that people in your villa are gathering to take drugs. We need to make regular checks."

"How is it possible? We don't have any drug users here at all. The security guard shook his head.

"Check before you know."

"No, our master has rested and can't disturb him any more."

"No checking, more problematic."

"This... How can I do that? You can't just listen to others and check it. It disturbs our master's rest. What can we do about...