Night fell when Estelle finally had a comprehensive understanding of the company.

Then she sorted out the notes she had taken today, stood up, and turned off the light.

Mr. Mysterious was returning soon, so she couldn’t turn on the light.

About ten minutes later, Mr. Mysterious pushed the door open, came in, and then locked the door. He seemed to be in a bad mood today.

When he saw Estelle, he asked in a gloomy voice, “Have you had dinner?”

Estelle shook her head and said, “Not ...