Feng Xinying went to the security division again. There she resumed watching all the recordings. While she was watching them, she came up with an idea. "Don't show me all of them. Show me the recordings of the lunchtime and those after the office time was over because I was there most of the time on the desk, so obviously the perpetrator couldn't have come during the time when I was there."

The security head manager dug out only those recordings. She started watching them one by one patiently. No result came out from the ones that were recorded during lunchtime. Feng Xinying was getting exhausted. No matter in what direction she could think of, she was not able to pinpoint the person who would do this kind of an act. It was very clear that the person knew where the physical file was otherwise he or she couldn't have stolen it away.

She started watching the videos after the office hours. Suddenly she remembered that yesterday she had left the office earlier than usual to meet the owner of the ad agency.

"Give me the video recordings between 4PM-5PM," she asked the security head.

She got those recordings in the next five minutes. She started watching them carefully one by one. The recordings showed only the normal office people going around here and there. Most people, who came to her side, went to her neighbor's cubicle or went past her cubicle, but none of them turned towards her cube.

She asked the security head to fast forward the videos out of frustration. Nothing was singling out. She was getting very upset and so she got up from her chair to walk a bit. She went out of the door and then came inside thinking how to catch someone so sharp that he or she found the best time to enter and commit the crime without detection. Her gaze went to the video that was fast-forwarding.

"Stop!" she shouted. The security head paused the video immediately.

"Who was that?" she asked.

"Who Miss Xinying?"

"The young boy who came near my cubicle."

The security head looked at the screen, but all he saw was her neighbor who had walked out of her cubicle to the elevator.

"Go back a little," she instructed.

The video was rewind slowly.

"Stop!" she said loudly as her eyes caught the boy. The young boy was wearing a jacket over his shirt and black pants. There was a black cap on his head and looked more like a delivery boy. It wasn't easy to make out his features. He had stopped right next to Feng Xinying's cubicle.

"There!" she pointed at the young boy. "Who is he?"

He was close to her cubicle. "Is there any other camera?"

"Yes Miss Xinying. There is one more camera but that is far away from this location."

"Play it."

The video started playing and the boy was seen going inside the cubicle. He ducked when he went inside.

Feng Xinying became excited. "Get the recording of the other video," she said.

The other recording was from a little far away. It was clear enough to see what he was doing but not clear enough to make out his features. The boy had ducked and hid himself under her office desk. He waited there for some time and when the crowd thinned, he opened her desk drawers. Swiftly, he browsed through the folders kept inside and picked the one he had been looking for. He closed the rest of the drawers and after hiding the folder in his jacket, he walked out as quietly as he had come in.

"Can you zoom in and see who that boy was?" she asked the security people there.

"Yes ma'am," they said and zoomed on him. However, they could make out his features clearly only because he was wearing that black cap. They tried zooming him from the other camera too, but nothing worked. All they could see was his nose and fair skin – too fair. As a matter of fact they chuckled at his feminine skin.

Feng Xinying clenched her jaw when they made fun of him. "Do you know of any such boy that works on this floor?"

"Miss Xinying, around a hundred and fifty people work on this floor. We don't know all of them."

"It is your duty to know each and every one of them. What kind of security are you that you don't know only a hundred and fifty also?" she scolded them.

"Get me the logs of all those who came to the office yesterday on this floor."

"Yes Ma'am."

Feng Xinyin walked out of the door but on second thoughts she came back, "Get logs of men only!"

"Yes ma'am…" replied the head sheepishly. "But ma'am it is possible that someone from a floor below might have come…"

"Every time a person enters this floor, his or her biometric data is logged somewhere – right?" she asked.

"Yes Ma'am."

"Get me that data, okay?" she said calmly, although she was seething with anger inside.