The subway passage is far from the ground, so you can isolate the endless stream of people on the surface without any effort. Zhang Ze tried his best to feel the signal sources within the subway range, even within the railway tunnel.

Although there are a lot of people, it is easy to distinguish the emotions in it. Zhang Ze just wants to see if there is any clue possible to find any clues through these emotions.

If Ding Yan was not lost by himself, it should have been hijacked by others. Where did the hijacking go? There are surveillance everywhere in the subway station, but...

Zhang Ze opened his eyes and looked at the dark subway tracks. This was a relatively early subway station. The station was different from the newly built stations later, and the entrance was not completely closed.

So if someone really hijacked Ding Yan, it would be possible to go down into the subway tunnel and go out to another exit.

Although Zhang Ze did not know whether there was another exit inside the subway tracks.

But this bug is so big that even the police officers in the police station cannot ignore it. Captain Gao and Liu Kai followed the girl's route while discussing in a low voice.

"The surveillance is almost here." Captain Gao looked at the photos on his mobile phone, then looked in the direction that the surveillance could not be taken. That direction was almost at the end of the subway station, and there was a public bathroom in the corner.

"So the girl should have gone to the bathroom, and then got on the car from that location, the last car." Liu Kai said his inference.

"Well, otherwise I would have jumped the track, but the police station had searched along the track before and found no clues." Captain Gao said as he walked towards the bathroom.

There will definitely be no surveillance in the bathroom, but there should be on the train, so as long as the surveillance video of the last train that day is called out, you can tell whether the girl has boarded the subway.

Captain Gao looked through the list of evidence in his hand and found that the road was also blocked. Due to line problems on the train that day, there were several surveillance cabins that were not easy to use.

Captain Gao tutted his mouth. Judging from the current clues, he seemed to have fallen into a dead end like the police station.

Or you can check the monitoring of the station in each station, just check the arrival time of the last bus that day, and then watch the video of the station exit.

But from this station to the place where the girl lives, there are more than a dozen stops on the road and there are three transfer points. If each of them is changed to the point and continues to extend downward, then the possibility is too great.

For some subway lines, the last bus time is a little later, which means that if you transfer, you may take different trains. In this way, the workload that needs to be checked is too high.

Zhang Ze was also a little helpless. If the case had just happened, its sense of smell and beast spirit mark could play a big role, but several days have passed now, and this is a subway station with people coming and going, and the smell is completely diluted or even gone.

Humans have even left the scope of the beast spirit mark.

Captain Gao's phone rang, and it was answered from the police station where Xianglinli Subway Station was located. The station sent someone to introduce the situation and cooperated with the investigation of the Criminal Investigation Detachment.

The person has arrived, outside the surveillance room.

In the monitoring room, Xiaoxue was seriously checking one lens and one lens. Because she was not familiar with the system and camera settings here, there were technical personnel who specialize in the monitoring network to cooperate.

"Please help me adjust the probe, at 10:51."

The technician shook his legs violently, sighed impatiently, and turned on the camera with great movements.

Xiaoxue looked at the technician a little strangely. The latter tilted his head and frowned, almost writing it on his face.

"What's wrong with you?" Xiaoxue asked bluntly without hesitation.

The technician frowned and looked at her, shook his legs and said, "It's okay, which one should I adjust?"

"No, I'll tell you what your attitude is now. Someone is missing here now and may be killed. I will just adjust a few surveillance monitors. Are you so impatient?" Xiaoxue has a open-minded personality and can't stand the sarcastic look on others.

"Ha." The technician sneered and said with some dissatisfaction: "Beauty, I didn't say anything, right? I'll adjust which head you asked me to adjust, right? Please don't put a hat on me, I'm very cooperative."

"You!" Xiaoxue was so angry that she was speechless. Indeed, this person was very smart. He didn't say anything too much, but his attitude was very annoying. But if Xiaoxue complained about it or stopped investigating it, he would just say with confidence that I didn't say anything, which seemed to be a problem with Xiaoxue's working method.

Thinking of this, Xiaoxue calmed down and said, "Okay, aren't you willing to adjust the content for me? I'm not angry anymore, so I'll let you adjust it here.

So Xiaoxue suppressed her anger and continued, "Then please find out the picture of No. 3 just now and adjust the time."

"After a lot?" the technician asked desperately.

"You follow my command, just say ok." Xiaoxue's voice was not filled with emotion. "From...after...after..."

Because she was angry, Xiaoxue also tilted her neck and kept moving backwards.

In fact, the time has passed for the last bus to leave, and there is no passenger in the subway.

However, the station was still brightly lit, and only some of the lights were turned off. There were staff on night shifts and maintenance workers walking back and forth.

Then the surroundings became quiet, and it was almost midnight. The duty staff of each department counted the receipts, wrote the duty schedule, and repaired and inspected the routes at their respective positions.

The busy train tracks during the day became quiet.

"Back,...after..." The picture was completely still. Xiaoxue and the technician were almost watching the video with a fight. Xiaoxue's eyes were blank and there was no focus, but she kept asking the technician to adjust it backwards.

The technician's legs were shaking more and more, and his face was full of repulsion and impatientness.

"Ah!" Xiaoxue suddenly screamed, scaring the technician so much that she was shocked. Xiaoxue continued to shout in a sharp voice: "Wait a minute! Pull back."

Not only Xiaoxue, but also the technician who had been staring at the screen and was also noticed that at that moment, something flashed past the subway platform.

The subway track is sunken, with a distance of more than one meter between the platform and the track, so if someone walks on the track, you should only see one head above.

And the black shadow that flashed by just now was obviously above someone's head.
Chapter completed!