Seeing that I frowned, Zhao Weiguo asked curiously: "Brother Di, what are you thinking? Do you also think that this kid is acting too smoothly." ”

I nodded appreciatively, the hero saw the same thing, but I didn't expect that Zhao Weiguo had already noticed this abnormality in advance.

In several screens, the picture of the man in the white coat was repeated, staring at the neat medical cart, and a flash of inspiration suddenly flashed in my mind.

"Nurse's station," Zhao Weiguo and I blurted out in unison.

Looking at each other and smiling, we couldn't help but see appreciative glances in each other's eyes.

"Look at the cameras at the nurses' station," Mr. Zhao told the security guards.

I turned to the male doctor standing next to me and said, "Doctor, please go and push the trolley in elevator number three, and be careful not to touch anything in it." ”

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

The security guard checked the video of the whole day in the camera at the entrance of the nurse's station, and did not see the young man in the white coat.

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

I suddenly had another guess in my heart, perhaps, the trolley was not picked up by the man in the white coat himself, but someone sent it to him.

This bold idea rekindled my fighting spirit.

In order to test this idea, I had to re-comb through the video to match all the time, and as long as the time difference between each of the connected videos was close enough, it would be possible to prove that the killer did not have a trolley from the nurses' station at all.

Then, if you look closely at the location where the trolley first appeared, it is not difficult to analyze where the trolley came from.

Obviously, Zhao Weiguo also thought of this.

Because I found that he was already intently looking at the time above each of the connected videos.

As I expected, it was already certain that the murderer had never been to the nurse's station at all.

He simply didn't have time.

Look at the location where the trolley first appeared.

Zhao Weiguo and I looked at each other and smiled, each with our own thoughts.

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

"On the first floor, or the fire corridor on the second floor, his clothes were also changed in the corridor. I said.

At this time, in the corridor outside the door, there was a light sound of hula and la.

Zhao Weiguo and I turned our heads to look behind us.

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

The monitoring room was too cramped, so we walked out the door and carefully inspected the trolley.

It is impossible to have fingerprints, because we have found in the video that the young man in the white coat has been wearing disposable medical gloves on his hands since he touched the trolley.

That's why I dared to rashly ask the male doctor to push the trolley over, and Zhao Weiguo didn't object.

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

I looked over and over for a long time, but I didn't find anything unusual.

When I opened the small cabinet door underneath, there was a twisted white coat inside.

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

"Hey, Katsuo, come to the monitoring room. ”

A few minutes later, Liesheng came at a trot.

Zhao Weiguo pointed to the white coat in the cabinet and said to her, "See if there is any suspect 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, rummaging carefully.

After looking for a long time, I didn't even find a single hair.

Zhao Weiguo was a little disappointed, turned around and entered the monitoring room again.

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

Going around to the back of the trolley, on the aluminum alloy bezel on the body, I saw a string of bright red numbers: 221.

It was obviously blocking the template and sprayed with red paint, which was a digital number in the hospital that was specially used to distinguish the ownership of medical devices.

Pointing to the string of numbers, I looked up and asked the male doctor opposite, "Number 221, is it the equipment in your emergency department?"

"No, the equipment in our department generally starts with 6. The male doctor said.

I looked like a drowning man who suddenly grabbed a life-saving straw, and asked eagerly, "Which department is the one that starts with the second?"

"It seems, it seems to be 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 in the thoracic surgery department, and he has a small cart spraying 250 on the cart in his office, and I laughed at him for it. ”

I excitedly turned around and went into the monitoring room.

Zhao Weiguo had apparently heard my conversation with the male doctor.

He said directly to the security guard: "Check the fire escape door on the first and second floors of the emergency department to see who is sending the trolley over today." ”

"Yes," the security guard tapped his finger frequently, and soon called up the desired video file.

rummaged through them one by one, and finally found a cleaning aunt in the corridor on the first floor, pushing a small cart, walking towards the camera. Then disappeared behind the camera.

The camera closest to the fire escape is installed directly above the fire escape door, so the main entrance is the blind spot of the camera.

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

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

In other words, half an hour before we arrived at the hospital, the nurse aunt had already prepared everything, including a white coat and an epinephrine injection.

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

The security guard zoomed in on the image and carefully identified it for a while, because the video was relatively blurry, he was not easy to judge, so he said cautiously: "It looks a bit like Sister Li." ”

"What's her full name?" Zhao Weiguo asked.

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

"Where is she now, find her location immediately," Zhao Weiguo commanded.

The security guard hurriedly sat up straight and busied himself on the computer again.

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

At night, in order to deal with emergencies, only in the emergency department, there will be one or two night cleaners.

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

I originally thought that at this time, it should not be difficult to find such a cleaning aunt, but the reality disappointed me, and I searched through almost all the surveillance videos of the entire hospital, and I couldn't find Sister Li from it.