In this way, the secret room can be explained, that is, the murderer has long found out the situation of the deceased, and found a way to get the key from the deceased, which is certainly not a short-term process.

"Well, you can check the social connections of the deceased again, especially those who have suddenly appeared recently." Liao Wei also nodded and said.

Bai Qi bowed his head and wrote it down on the information.

"In addition, judging from the black rose left at the scene, the murderer in the first case and the second case are the same person, and the drawing technique is the same." Li Chen added.

Bai Qi nodded, this trace examination has been determined, and it is precisely because of this, iron-clad evidence, that several cases will be investigated.

"The second case is actually a case of murder in a closed room, the deceased lived in an urban village, a farmer's house, and there was no surveillance, no cyanide residue was found at the scene of the crime, and it was also put into big characters after death, and black roses also appeared next to it."

"There is only one possibility, the cyanide was personally poured by the murderer into the deceased, so no cyanide residue can be found at the scene."

"The same doors and windows are closed, and the same locks are intact."

"But apparently the murderers in both cases have their own preferences."

"As for the last case, it was moved from indoor to outdoor, and even the markings changed."

"On the way out, it seems that the last case is more likely to be a parody case." Liao Wei said.

Bai Qi nodded and turned his head to look at Su Tian.

Su leaned back in the chair, his eyes half-squinted, and his expression was a little lazy, looking like he was thinking carefully and making people feel a little lazy.

Su Tian nervously put his fingers on the conference table, knocking again and again, obviously the sound was not loud, but the few people present inexplicably felt that the sound seemed to hit their hearts, "poof, poof" was very loud.

Su Qian didn't answer Bai Qi immediately, but closed his eyes.

A few people next to him glanced at each other, but Liao Wei and Wu Hao didn't react, after all, they had cooperated, and they knew that this was Su Tian's habit when he was thinking.

The other two didn't know, so they inevitably felt that this person was a little too arrogant.

Bai Qi didn't react, guessing that Su Tian might be thinking, so he lowered his head and looked at the information.

Suddenly, Su Tian's fingers tapping on the table stopped, and his eyes suddenly opened.

said slowly, "The gang committed the crime, and the murderer was different. ”

Bai Qi took the information in his hand and looked up at Su Tian directly.

"Reason." Bai Qi said lightly.

Su tilted back to look, and the fingers that had stopped continued to tap again and again.

"Li Chen and Liao Wei are right, the murderer in the first two cases is the same, and although the murderer in the last case is different, it is not an imitation."

"In the first two cases, the murderer used a bloodless way of killing, and the murderer has a certain preference for secret rooms."

"Including the way Li Chen just painted roses, there is no doubt that the murderer in the first two cases is the same."

"For the first time, the murderer in the last case used the method of killing with blood, and he killed him with a knife straight to the heart."

"This method does not bring much pain to the deceased, the only thing that can bring the murderer a refreshing point is that in this way, the murderer's blood is splashed when he draws the knife."

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