Escape From the Library

Now that the options for the additional questions are determined, the next step is to use the "elimination method" to find the best answer.

Yue Xingwen glanced at the 20 medical records in the laptop, and said to Ke Shaobin, "Regroup the cases according to the time of death. How many times have the patients died together?"

柯少彬迅速整理出一份表格，道：“一共有四次。6月1到3号死了5人；8月10到13号死亡7人；10月15到20号死亡8人；我们住院的时间是12月24号，两天内又死了8人。”

Yue Xingwen carefully looked at the four groups of cases, and continued: "Sort out all the patients, doctors and nurses on duty who stayed in the cardiovascular ward at the time of the four cases, and find out the list with the highest degree of overlap."

Ke Shaobin sorted by name. After comparing the tables, the answer is very clear.

Yue Xingwen wrote down the five options determined just now on a piece of paper, and analyzed: "The first one is a 20-bed patient. He was not present when the incidents occurred in the past. This is his first hospitalization, which does not meet the requirements at all. The conditions for committing the crime can be ruled out."

As Yue Xingwen spoke, he simply crossed out "Option A" with a pen, and continued to analyze: "The second person, bed 21, 56-year-old Xu Dapeng, used to be a medical representative. When the incident occurred on June 6 and August 1 He was present, but he was not hospitalized on October 8. That is to say, the patient was killed four times, and he was absent once. He was not the murderer...but a key witness!"

"The third one, Xiao Wen, the attending doctor, happened to be the head of the hospital this year, and he was in the cardiovascular ward almost every day. At present, the possibility of him killing people at random cannot be ruled out. We have to wait and see."

"The fourth suspect, Ma Ping, a 30-year-old resident doctor, has an irregular night shift. He was not at the scene when the two incidents occurred on June 6 and August 1, and he did not meet the conditions for committing the crime."

The three set their sights on the last option.

Option E, after analyzing the database data, find out the hidden patients.

Looking at the name, Yue Xingwen narrowed his eyes slightly: "The last suspect, Zhu Yuanbo, a 55-year-old male, is a retired employee of a pharmaceutical factory. On June 6, August 1, October 8, and December 10, every When the patients died together, he lived in the cardiovascular ward. When the first case happened, he lived in bed 10, which was the closest to the old lady in bed 15 of the first deceased. He is very likely to be the murderer. "

Yue Xingwen looked at the remaining options on the paper, circled the two names with a pen, and said: "Xiao Wen, Zhu Yuanbo, the murderer is among these two people."

After comparing and sorting out the data, the originally complicated situation gradually became clear, and the answer became an alternative.

At noon, Yue Xingwen pretended to be wandering around the wards, and handed the written notes to the students.

A few lines of words were written with a black pen on the white paper torn from the dictionary, and the handwriting was chic and flying: "Students, all the previous 20 victims have been found, and the incidents occurred on June 6st and August 1th. No., October 8th, and December 10th, according to the comparison of the data in the case database, at present, Dr. Ma Ping, Bed 10, Bed 15, and Dr. Ma Ping were not at the scene several times when the crimes occurred, and the suspicion has been ruled out. Dr. Xiao Wen and Dr. The new suspect VIP-12 Zhu Yuanbo, the murderer chooses one of the two, and begins to investigate the motive of the crime."

The students who got the notes all expressed their emotions—it felt like they encountered an additional question that they would never do during the exam. As a result, Xueba personally wrote a cheat sheet for everyone to solve the problem.

In the afternoon, Yue Xingwen assigned investigation tasks to the students.A few girls tried to talk to other patients in the ward and asked about Dr. Xiao Wen's situation.

Liu Xiaoxiao is 155cm tall, petite and cute, with a very sweet mouth. From the list given by Yue Xingwen, she found an old grandmother who had been hospitalized three times, and pretended to chat about Dr. Xiao's situation.

At the same time, Yue Xingwen was also investigating the key witness - Xu Dapeng from the 21st bed.

At first, he suspected that this person was the murderer, but in the end he discovered that this person was actually a key witness who was present in three of the four incidents.Uncle Xu looked energetic, Yue Xingwen and Liu Zhaoqing went to his ward and pretended to chat.

Yue Xingwen said politely: "Uncle, you have already had heart surgery, right? The doctor asked us to have the surgery, and we were a little scared. We wanted to ask about the situation of the seniors who had the surgery."

Xu Dapeng smiled heartily: "What's so scary about surgery? Interventional surgery is not an operation on the chest, but a small incision in the blood vessel of the thigh, and the stent is introduced into the heart along the blood vessel."

Liu Zhaoqing followed up and asked, "When did you have the operation?"

Xu Dapeng said: "June 6rd."

Yue Xingwen pretended to be curious: "When you were hospitalized, did anyone die in the ward? Several patients died in a row in the past two days. When I went out today, I saw a nurse pushing a hospital bed covered with a white cloth..."

Xu Dapeng sighed, and said: "Sudden death from a heart attack is very common. The few times I was hospitalized in the past, I met people who died in the ward. Today, the 19th bed next to me is gone. The one you saw this morning must be him."

Yue Xingwen asked: "This morning, did you hear any noise in the corridor?"

Xu Dapeng recalled it carefully for a moment, and then said: "I slept very hard, just... vaguely felt that a doctor came to change the dressing on the next bed. Later, the ECG monitor in the next bed suddenly called the police, and the doctors and nurses broke into the ward Rescue, I didn't know that something happened to the 19th bed."

"Doctor Xiao is responsible for the rescue?"

"Well, Dr. Xiao and the nurse on duty rescued him every time. They rescued him for half an hour last night, but they couldn't save him. Sigh... It's a pity that bed 19 is only 55 years old, about my age."

The two looked at each other, chatted with Mr. Xu about some daily life, and then left the ward.

Mr. Xu's memory of the previous hospitalizations is not very clear, but this time, the murderer happened to kill him next door, and he noticed that someone came to change the dressing in the next bed in the early morning, which proved that the murderer's modus operandi was indeed to inject the patient with drugs.However, the murderer was extra careful, and perhaps even pretended to be a medical staff to go in and out of the ward, without arousing the suspicion of the patients.

Liu Xiaoxiao was waiting for them in the corridor. When she saw Yue Xingwen, she immediately stepped forward and said in a low voice, "Xingwen, we split up and asked some old ladies in the ward. Everyone spoke highly of Dr. Xiao. There was also an old lady who was rescued by Dr. Xiao. In addition, they gossiped that Dr. Xiao was busy with work and had never found a girlfriend. There were old ladies in the ward who enthusiastically introduced him to someone, but he refused because he was too busy with work. "

Too busy at work, not looking for a girlfriend?

Yue Xingwen rubbed his chin and fell into deep thought.

In the past six months, Dr. Xiao has been in the ward every day, and he has sufficient time and conditions to commit crimes.

Suppose he has antisocial personality disorder, or a psychopath. After studying medicine for many years, relying on the knowledge he has learned, he starts to slaughter his own patients. If he is in a bad mood, he kills a few patients to find excitement and a sense of accomplishment...

Then why did he concentrate on killing people?

He stays in the ward for a long time, and he can kill at any time 365 days a year, there is no need to concentrate on killing several in a few days.

A large number of patients died for several days in a row. The doctors had to rescue them, discuss the cases, make a summary, and report the results of the discussion of the dead cases to their superiors. He himself would be very busy.

While injecting the patient with drugs to cause myocardial infarction, he ran over to rescue the patients at the same time. He rescued several patients in one night, but he couldn't survive, and then wrote the death case report... Is he too free, looking for something for himself?

As far as he is concerned, killing one every few days so that no one can detect it is a more reasonable way to commit crimes, right?

What's more, there was an old lady in the ward who said that she had a heart attack and was rescued by Xiao Wen. If Dr. Xiao was really the murderer, why did he kill people and save others at the same time?This is really inconsistent and unexplainable.

Relatively speaking, Zhu Yuanbo is more suspicious.

Yue Xingwen was silent for a moment, then said to Liu Zhaoqing in a low voice: "Senior brother, it seems that I have to check this Zhu Yuanbo myself."

Liu Zhaoqing asked seriously: "Do you want to sneak into his ward?"

Yue Xingwen nodded, then turned to look at Liu Xiaoxiao: "Please call Qin Lu, I need her help."

Liu Xiaoxiao quickly called Qin Lu from the Department of Geography, and Yue Xingwen let the three of them come over, and said softly, "Zhu Yuanbo just finished dinner. Before going to bed, he should go out to throw out the trash in the lunch box. While he is out, what do you think?" To find a way to entangle him, Qin Lu and I went into the ward to look for clues. Brother, once he comes back, call the police immediately."

All three expressed their understanding.

At around seven o'clock in the evening, all the patients in the ward just had dinner.

Yue Xingwen and Liu Zhaoqing pretended to be taking a walk near the nurse station, while Qin Lu and Liu Xiaoxiao sat on the chairs beside them, found a brochure on cardiovascular disease from the ward, and looked down at it seriously.

After waiting for a long time, the door of the VIP ward suddenly opened.

The four immediately tensed their nerves.

An old man came out, holding a lunch box in his left hand, and turned around to throw away the trash at the lunch box collection place. Yue Xingwen made a gesture behind him, and when the old man walked away, he and Qin Lu quickly entered the room.

Ward VIP-1 is located in the lower left corner. There is a glass window on the door. Normally, the curtain can be drawn to maintain privacy, but as long as the curtain is opened, the situation of the nurse station can be clearly observed, and the night shift nurse can sneak out to commit crimes when the nurse is away. .

The ward is very spacious, with a soft sofa and an LCD TV on the wall.

Yue Xingwen noticed that there was no folding bed for family members to accompany him overnight in the ward, nor were there any fruit baskets, flowers, etc. It was obvious that no one had visited him during his hospitalization.The entire ward was spotlessly clean, even the quilts on the beds were neat.It seems that this old man Zhu has a certain degree of obsessive-compulsive disorder.

Yue Xingwen turned his attention to the closet where the patient used to store daily necessities. He opened the closet and searched quickly. There was a black suit hanging in the closet, which was worn by Mr. Zhu before he was hospitalized.Yue Xingwen rummaged through the pockets of his suit, and found a wallet from it.

There is a photo in the wallet.

The photo is a family portrait of four people, two sitting in front and two standing behind.

Yue Xingwen recognized at a glance that the old man with gray temples sitting in front was Zhu Yuanbo, and the old lady he was gently hugging looked very elegant, and she should be his wife.Standing behind the two of them was a girl with ponytails, delicate and beautiful, with two lovely dimples on her face when she smiled.Another young man—

It was Doctor Xiao Wen.

Yue Xingwen's scalp tingled for a while, he quickly put the photo in his pocket, hung up his suit, and continued to search under the closet.Then, Yue Xingwen found a brand new white coat that was stacked on the bottom layer.

Qin Lu was startled, and whispered: "It seems that he is wearing a white coat, pretending to be a doctor to enter and leave the ward?"

Yue Xingwen looked serious: "Go to the bathroom and have a look."

Qin Lu pushed open the bathroom door, and the bathroom was also very tidy. Yue Xingwen carefully searched for clues around the toilet. Suddenly, Qin Lu said, "Xingwen, look here!" He followed the girl's gaze and took a closer look. , I found a needle in the corner next to the trash can.

Qin Lu tore off a piece of tissue, carefully picked up the needle and showed it to Yue Xingwen.

That's a needle from a disposable syringe.

The needles of the patients were all taken back to the medical waste recycling station by the nurses. The injection needles that appeared in the bathroom of the ward were obviously things that Mr. Zhu brought into the hospital privately.When he was sorting out the crime tools in the bathroom, he accidentally dropped a brand new needle in the corner of the trash can, and was found by Qin Lu and Yue Xingwen.

At this moment, a conversation suddenly sounded outside: "Hello, old man, I want to ask, have you ever had interventional surgery before? Oh, old man, please don't ignore me, I am a patient in the next bed... old man!"

Liu Zhaoqing's voice was loud, mixed with the sound of footsteps, Mr. Zhu is back!

Yue Xingwen immediately closed the bathroom door with his backhand.

Hearing a "squeak", the door of the ward was gently pushed open. Zhu Yuanbo's footsteps were getting closer and closer, and he was walking towards the bathroom. Qin Lu quickly took out the globe and said, "Transform!"

The restroom section where the two were located and the section that Qin Lu had set before switched places in an instant, and they suddenly appeared in the rest area in the upper left corner of the ward, where Liu Xiaoxiao responded.

Seeing that the two of them came out of the ward safe and sound, Liu Xiaoxiao heaved a sigh of relief, and stepped forward and said, "Are you alright?"

"It's okay." Yue Xingwen handed the photo to Liu Xiaoxiao: "This girl should be Xiao Wen's girlfriend."

Liu Xiaoxiao took the photo and said, "It's not just a girlfriend. They are wearing rings, so they should be engaged!"

Yue Xingwen looked at where Liu Xiaoxiao was pointing, and sure enough, in the gap between the two old men, he could see the two young men behind him interlocking their fingers intimately. Pair of wedding rings.

Liu Xiaoxiao suddenly realized: "No wonder Dr. Xiao hasn't found a girlfriend. He should like this fiancée very much and can't forget her, so when others introduce girlfriends to him, he refuses them with the excuse of being too busy!"

The clues finally all came together.

Yue Xingwen brought the two girls to the ward in the upper right corner quickly, handed the photo to Ke Shaobin and said, "Go through the information and check whether a girl surnamed Zhu died of a heart attack in the past few years."

Ke Shaobin was shocked when he saw the photo, and hurriedly turned on the computer to search for keywords.Within a short while, he found out that a 25-year-old girl named "Zhu Chenxue" died of a heart attack a year ago at 1:50 in the morning.In Zhu Chenxue's "Family" column, his father's name is Zhu Yuanbo, and his mother's name is Xue Huaning.Continue to search Xue Huaning, and found that this 1-year-old man also died of a heart attack a year ago, and the time of death was also in the early morning.

The four looked at each other.

Yue Xingwen glanced at the photo again, and sighed softly: "We have found the murderer's motive."

In the photo, Zhu Yuanbo smiled kindly and kindly. His daughter finally got engaged to a young and promising doctor. However, the good times didn’t last long. His favorite wife and only daughter died of heart disease one after another. Zhu Yuanbo’s psychology gradually became distorted. He began to kill the ward Cardiac patients who can be treated.

Xiao Wen is his daughter's fiance, and he can easily be admitted to the cardiovascular ward through this relationship.

Xiao Wen probably felt guilty about his girlfriend's death, so he never refused the "prospective father-in-law" to be hospitalized. Whenever Mr. Zhu wanted to be hospitalized, Xiao Wen could spare a bed for him and take care of him personally. Also directly into the VIP ward.Dr. Xiao probably did not expect that this old man would become a bloodthirsty butcher because of the death of his wife and daughter.

All four incidents were present.

Closest to the first dead.

Both his wife and daughter died of heart disease, resulting in psychological distortion.

I am a heart patient, engaged in pharmaceutical related work, and know how to quickly kill heart disease patients.

A needle was found in the bathroom of the ward, and a brand new white coat was found in the closet.

The photo reminds him of his special relationship with Xiao Wen, the chief doctor in the ward.

Ironclad evidence.

The lurking murderer in the cardiovascular ward is this mysterious patient—Zhu Yuanbo from the VIP ward!