Seeing me frowning, Zhao Weiguo asked curiously: "Brother Di, what are you thinking? Do you also think that this kid is doing too well?"

I nodded in agreement. The heroes saw the same thing, but unexpectedly, Zhao Weiguo had already noticed this strangeness in advance.

On several screens, the scene of the man in a white coat was repeated constantly, staring at the neat medical cart, and a sudden flash of inspiration in my mind.

"Nurse Station," Zhao Weiguo and I blurted out at the same time.

When we smiled at each other, we couldn't help but see admiring gazes in each other's eyes.

"Check the cameras of the nurse station," Zhao Weiguo said to the security guard.

I turned my head and said to the male doctor standing aside, "Doctor, please push the cart in the No. 3 elevator over and be careful not to move anything inside."

The male doctor nodded and quickly walked out of the monitoring room.

The security guard checked the videos all day today in the camera at the entrance of the nurse station, but did not see the young man in white coat.

Zhao Weiguo and I couldn't help but frown again.

Suddenly I had another guess in my mind. Perhaps, the trolley was not picked up by the man in a white coat, but was sent to him by someone.

This bold idea rekindled my fighting spirit.

In order to verify this idea, I had to re-examine the video just now to match all the time. As long as the difference between each connected video is close enough, it can be proved that the murderer was not a trolley obtained from the nurse station at all.

Then, carefully check the location where the trolley appears at the first time, and it is not difficult to analyze where the trolley was obtained.

Obviously, Zhao Weiguo also thought of this.

Because I found that he was already focusing on checking the time above each connected video.

As expected, the murderer had never been to the nurse's station at all.

He had no time at all.

Look at the place where the trolley appeared immediately.

Zhao Weiguo and I looked at each other and smiled, and each had their own ideas.

"Brother Di, where do you think the cart was originally hidden?"

"He was also replaced in the fire corridor on the first floor or the second floor." I said.

At this time, a whirring sound came from the corridor outside the door.

Zhao Weiguo and I turned our heads and looked behind us.

The male doctor had already pushed the cart to the door of the monitoring room.

The monitoring room was too narrow, so we walked out of the room and checked carefully around the trolley.

There is no fingerprint, because, in the video, we have discovered that a young man in a white coat always wears disposable medical gloves on his hands since he touched the trolley.

That's why I dared to let the male doctor rashly push the cart over, and Zhao Weiguo did not object.

This is an ordinary, nurse-specific trolley. On the car, there are alcohol in several trays, surgical clips for needle removal, iodine, medical cotton swabs, tourniquets, gauze, medical tape, disposable medical gloves...

After looking around for a long time, I didn't find anything unusual.

Open the small cabinet door below, and as expected, a white coat twisted into a ball was stuffed inside.

Zhao Weiguo was disappointed, so he took out his cell phone and dialed Lie Shengnan's number.

"Hey, it's a victorious man, come to the monitoring room."

A few minutes later, Lie Shengnan trotted over.

Zhao Weiguo pointed to the white coat in the cabinet and said to her: "See if there is any suspect's hair or other valuable things."

Lie Shengnan nodded skillfully, squatted down, took out a pair of white gloves from his pocket, carefully took out the twisted white coat, and then knelt on the floor and searched carefully.

After searching for a long time, I didn't even notice a hair.

Zhao Weiguo was a little disappointed and turned around and entered the surveillance room.

But I always feel that this small cart is the key to the matter.

Walking around the back of the cart, I saw a string of bright red numbers on the aluminum alloy baffle of the body: 221.

It was obviously blocking the template and sprayed with red paint. It was a number specially used by the hospital to distinguish the belongings of medical devices.

Pointing at the string of numbers, I looked up and asked the male doctor opposite me, "No. 221, is it the equipment for your emergency department?"

"No, the equipment in our department usually starts at 6." said the male doctor.

I seemed to have suddenly grabbed the drowning person who saved the life-saving straw and asked anxiously: "Which department is the one that starts with the second one?"

"It seems, it seems to be a thoracic surgery," the male doctor said hesitantly.

"Are you sure?" I stared into his eyes.

He lowered his eyelids, thought carefully for a while, nodded and said, "I'm sure it's thoracic surgery. Because I have a classmate who is divided into thoracic surgery. The trolley in his clinic is spraying 250, and I have ridiculed him for this."

I turned around excitedly and entered the monitoring room.

Zhao Weiguo obviously had heard the conversation between me and the male doctor.

He said to the security guard directly: "Check the door of the fire escape on the first and second floors of the emergency department to see who was today, and send the cart over."

"Yes," the security guard clicked frequently, and soon called up the video file he wanted.

After searching one by one, I finally found a cleaning lady in the corridor on the first floor, pushing a small cart and walking towards the camera. Then she disappeared behind the camera.

The camera closest to the fire passage is installed directly above the door of the fire passage, so the front door is actually a blind spot of the camera.

I looked up at the time above the video, and it showed that it was an hour now.

We found that it has been almost half an hour since the injection.

That is to say, half an hour before we arrived at the hospital, the nurse had everything ready, including a white coat and adrenaline injection.

"Do you know this person?" Zhao Weiguo said to the security guard.

The security guard enlarged the image and carefully identified it for a while. Since the video was blurry, it was hard to judge, so he said cautiously: "It looks a bit like Sister Li."

"What is her full name?" Zhao Weiguo asked.

The security guard scratched his head and said, "I really don't know this. Everyone calls her Sister Li, you can ask the personnel department in the hospital."

"Where is she now, find her place immediately," Zhao Weiguo ordered.

The security guard hurriedly sat upright and started working on the computer again.

It's early morning and the other cleaners are off work.

At night, in order to deal with emergency situations, only one or two night shifts will be left in the emergency department.

I know this very well, because, after all, I have been in the hospital for many years, have never eaten pork, and have seen pigs running.
Chapter completed!