On the way back to the city, Xia Shi said to Gu Song while driving: "The murderer who killed Yu Jiannan and threw the body should be a sturdy adult man, no matter whether Xiao Yun has a motive to commit a crime or not, she does not have the corresponding ability to commit crimes, unless she has a male criminal accomplice." ”

"It's all this time, you might as well be more direct." Gu Song glanced at Xia Shi and asked bluntly, "Do you suspect that Yu Jiannan was killed by Xiao Yun and Teacher Chang?" ”

"It's a possibility. However, didn't you say when you drank tea just now that Xiao Yun would never do anything to hurt Yu Jianan. So ......"

"Why, you believe what I say?"

"Believe it, why not." Xia Shi smiled and said, "If Xiao Yun kills Yu Jianan, she still dares to find you to solve the case, isn't that enough to support?" Those who dare to take the initiative to provoke you are either crazy or psychopaths. Which kind do you think Xiao Yun looks like? ”

"She's nothing, just a sister who has lost her brother."

"So now there's one thing left that we might need to verify......"

At about six o'clock in the evening, Gu Song came to Muyang Psychological Clinic alone. Teacher Chang had already gone home from work, and Xiao Yun received Gu Song's message and deliberately stayed in the clinic to wait for him.

Two people sit on the sofa in the lounge area. Gu Song was not in the mood to gossip with Xiao Yun, so after a few simple greetings, he said straight to the point: "I came to you today for Yu Jianan's business." ”

Hearing this, Xiao Yun was slightly surprised, and at the same time looked at Gu Song with expectant eyes and asked, "Have you found the murderer of my brother?" ”

"Sorry, not yet. But I'll do everything I can to find out the cunning murderer and give you an account of your dead parents. ”

"So, you're starting to take on the case now?"

"Yes, I will be responsible for this case to the end until I find out the real culprit and avenge your brother." Gu Song lied to Xiao Yun, did not say that he took the time to intervene in this case because he was suspended, and did not tell Xiao Yun that he was just investigating privately.

When he came to the clinic to "talk" with Xiao Yun, Xia Shi was helping him investigate another matter non-stop. I believe that with Xia Shi's ability, he can definitely start from the way the murderer threw the corpse and find more clues that have been ignored before.

"I heard from Officer Liu that my brother participated in crowd gambling and had a conflict with people in the casino, and was beaten all over his body. Did they kill my brother? ”

"We're going to continue to investigate this matter, can I ask you a few questions now?"

"Just ask." Xiao Yun nodded, showing a very cooperative expression, "As long as it can help you find the murderer, you can ask anything." ”

"Okay, let's get started." Gu Song took out a small notebook for taking notes. "On May 17th, you really didn't see Yu Jiannan in the clinic, and you didn't know that he was desperate and needed help, right?" Gu Song paused, afraid that Xiao Yun would misunderstand something, so he hurriedly added, "I didn't mean anything else by asking this, I just wanted to confirm the specific situation that day." ”

"I understand." Xiao Yun smiled understandingly, "Of course I haven't met my brother. If I knew that he was in such a big trouble and needed money, I would definitely find a way to help him, how could I watch him have an accident? ”

According to surveillance footage, Yu Jiannan lost her trace at the intersection near the psychological clinic at around 7:50 a.m. on May 17. Do you remember when you came to work that morning, something noteworthy happened around here? ”

"No, everything is normal."

"What time did you come to work that day?"

"I can't remember the exact time, but it should be between 8:30 and 8:45, which is what Mr. Chang requested. If there are no special circumstances, I usually come to work at the clinic on time. ”

"Then do you remember what time Teacher Chang came to the clinic?"

"Teacher Chang's time is not fixed. If there is no patient appointment, he may not come until after 10 o'clock or in the afternoon. But I remember that that morning, Mr. Chang arrived at the clinic before me, and I don't know what time it was. ”

"How do you remember so clearly?"

"Because in mid-May, Mr. Chang was busy rushing to prepare a book. He liked the atmosphere in the office and often worked overtime at the clinic to write books, so he came earlier than me and left later than me in those days. ”

"That is, on the night of the 17th, what time did Mr. Chang leave the clinic, and what did he do after that, you don't know at all, right?"

"Yes."

"Was there anything wrong with Mr. Chang's performance that day? For example, do you have any restlessness and lack of concentration? Did you show any special concern for you, ask about Tai Jianan's situation, or do anything that makes you feel different from the past? ”

"This ......" Xiao Yun frowned and thought for a moment, and suddenly felt that Gu Song's questions seemed to be very targeted. Xiao Yun is a smart girl, and when she guessed that Gu Song suspected that Teacher Chang was suspected of committing a crime, her mood couldn't help but be a little complicated. That was her most beloved teacher, the noble person in her life, who had helped her a lot in her life and work over the years, and she didn't believe that Teacher Chang would hurt her brother no matter what.

"Officer Gu, did you find any evidence against Teacher Chang? Otherwise, how could you ......" Xiao Yun looked at Gu Song with a melancholy expression, hoping that the other party would smile at her gently, and then comforted her and said, "Silly girl, don't worry, it's just routine for me to ask this, don't think nonsense." ”

But Gu Song's expression was also gloomy and melancholy. He shook his head helplessly and said, "It is a fact that Yu Jiannan lost his trace near the clinic. Although it is possible that he was robbed by the casino people halfway, it is also possible that something happened to him at the clinic. So if you think about it carefully, was there anything unusual that happened on the 17th? ”

Hearing Gu Song say this, Xiao Yun fell silent.

She knows that sometimes the police solve cases by finding clues from some seemingly inconsequential information. It's a pity that too much time has passed, and she doesn't have He Weiqi's extraordinary memory ability, and she can't recall all the details of the day of Yu Jianan's accident.

While Xiao Yun was racking her brains to think about the problem, Gu Song got up and left the rest area, looked around and asked, "Xiao Yun, can I take a look at the clinic casually?" ”

"Of course." Xiao Yun replied briskly, and also stood up with Gu Song.

The area of the clinic is not very large, about 60 square meters, including the front room, toilets, consultation rooms, offices and a storage room.

Gu Song has been to the clinic many times, and has received psychological treatment here as a patient of Teacher Chang, so he is very familiar with the environment here. He walked into the cozy consultation room on his left, glanced at the room's furnishings, and finally landed on a white wooden door next to the bookshelf.

"What's in that pantry?" Gu Song turned his head and asked Xiao Yun.

"There are some important documents in it, as well as patient files."

"Is the room usually locked?"

"Yes, Mr. Chang is a very cautious person, and he will take good care of important things."

"Can you open the room and let me see what's going on inside?"

"Yes. You wait for me to go to the front desk drawer and get a key. ”

After dozens of meters and seconds, Xiao Yun handed the key to Gu Song and said, "Although the key is kept with me, I rarely use this storage room. ”

"You didn't enter this room on the 17th, did you?"

"No......" Xiao Yun suddenly thought of something when she said this, "Ah, by the way, I remember in mid-May, I can't tell exactly what day it was, and Mr. Chang asked me to reorganize the storage room and clean it." ”

"What?" Gu Song's heart "chuckled" for a moment, and he felt that the situation was a little bad. "Xiao Yun, think about it, did Teacher Chang ask you to clean the storage room before or after the 17th?"

"It should be ......" Xiao Yun bit her lip, pondered for a moment, and replied with great certainty, "It's May 19th, the day before Teacher Chang hypnotizes you." ”

"That's after the crime." Gu Song thought in his heart, and couldn't wait to unlock the door of the storage room.

It is a room of about five square meters, with a wood-grain floor and surrounded by walls painted in ivory white. On one side of the room, there is a metal shelf about two meters high, on which books, cardboard boxes, file boxes and other items are neatly stacked, and there are several cleaning tools that are not commonly used in the corner.

Although everything was just speculation, seeing this neatly cleaned storage room, Gu Song's heart was still half cold. If Yu Jiannan came to Muyang Psychological Clinic on the morning of May 17, if Teacher Chang killed Yu Jiannan for some reason. For the sake of safety, it was impossible for him to transfer the body in the morning, and he would definitely hide the body somewhere, such as this storage room, and wait until after dark to transfer and dispose of the body.

Liu Yang thinks that Mr. Chang has nothing to do with Yu Jianan, and there is no motive for killing, which is just a superficial phenomenon. In fact, Teacher Chang's care and love for Xiao Yun, Gu Song saw it in his eyes. Out of the protection of Xiao Yun, it is entirely possible that Teacher Chang will have a dispute with Yu Jianan, and even lead to the evil consequences of murder in passion.

However, as things stand, there is little chance that there will be evidence of a crime left in the clinic. If Mr. Chang was the murderer, with his cautious character, he would have already cleared all the traces that were unfavorable to him. If he used his car to transfer the body, then the car must have been thoroughly cleaned, and it is estimated that it is difficult to find valuable clues.

Gu Song didn't dare to tell Xiao Yun about these terrible speculations, but Xiao Yun guessed a little bit in her heart.

Just when the two of them were relatively silent, the sound of doors opening and footsteps suddenly came from outside the consultation room.

Gu Song pulled Xiao Yun out of the storage room quickly, closed the door gently, turned around and saw Teacher Chang standing at the door of the consultation room, looked at the two of them in surprise, and asked in a not very friendly tone, "What are you two secretly doing here?" ”