In the laboratory of the Criminal Investigation Building, under the bright light, the colleagues of the Forensic Identification Department, Qiu Lan and Xiao Cong opened all the evidence boxes, and all the evidence bags inside were neatly placed on the table.

"Expert Cao, you are responsible for the identification and comparison of the materials, and I will focus on the items related to the body injuries of the female deceased brought back from the scene. Qiu Lan frowned slightly, her expression calm.

"Okay. Cao Fan nodded solemnly.

After that, they made a simple classification of the numerous items, and the forensic and forensic departments began to search for different targets.

In front of the evidence table, Qiu Lan put on dust-proof white gloves and goggles, and carefully picked up the first piece of evidence, "Xiao Cong, make a record, this is the wooden baseball bat found at the suspect's house." ”

"The shape and force of the baseball bat are consistent with the wounds on the female deceased's body Nos. 7, 9 and 13, and the defensive wounds on the deceased's arm are also likely to have been caused by the blow of the baseball bat. ”

The meticulous Qiu Lan carefully took out the baseball bat in the sterile space, and her sharp gaze fell steadily on the bat, "There are cracks on the surface of the bat, if the deceased has really been hit, there is a high probability that there will be sebum left in the cracks." ”

As she finished speaking, she picked up the tweezers on the side of her and carefully examined each crack, and near the head of the rod, she found two thin pale yellow transparent tissues.

"This is the superficial layer of skin tissue in the human body. She put the two strips into two different glass dishes and sealed them, "Xiao Cong, give this to Expert Cao, he should be able to extract DNA for comparison." ”

"Good. Xiao Cong nodded solemnly and handed the things to Cao Fan, who was comparing them in the appraisal room.

In the following time, Qiu Lan scanned and inspected more than a dozen other items found at the scene, but they did not match the circumstances of the case in terms of shape, strength, and degree of wear, so they were all ruled out one by one.

One hour, Cao Fan and Mo Heng from the forensic department walked out of the appraisal room with a few documents, "Doctor Qiu, there is a result." ”

Cao Fan, who had a heavy face, handed Qiu Lan a copy of the identification report, and said coldly: "In the house of the suspect Li Gang, we found a hair comb, on which we found a woman's hair, with two different sets of genes, one of which is a male gene. ”

"And the other group is the genes of the female deceased. ”

"If the gene of the female deceased is found in his home, then Li Gang can't deny that the female deceased appeared in his house, and the rhetoric of bringing the woman home is useless. Qiu Lan frowned thoughtfully, her lips pursed slightly.

She lowered her eyes, silently pondering all the clues she had found.

"Now it seems that the death of the female deceased may have a necessary connection with him, Expert Cao, have the test results of the samples you took in the pool come out?

"Doctor Qiu, this is a suspicion. Cao Fan took out another piece of information and scanned it with a keen eye, "I compared the deceased's pleural effusion with the pool sample taken at the suspect's house. ”

"There is a big difference between the two, and I can conclude that the deceased did not drown because of the water in the pool. ”

"If you didn't drown in the pool, where could it be?" Qiu Lan lowered her eyes and muttered thoughtfully as she tapped her jaw.

Xiaocao's body was found in the sea, and it happened to coincide with the time of a capsizing ship, and the helmsman of this ship was someone from the same company as Li Gang, which proved that the person who could use this method to throw the body must know the news very well.

The female deceased, Xiaocao, was an orphan who had lost her relatives, and not many people knew about her, but in this case, the police found information about the life of the female deceased in the suspect's home.

Coupled with the testimony provided by the security guard eight years ago, this series of evidence was blamed on Li Gang, and Qiu Lan was very sure that Xiaocao's death was inseparable from that short and fat man.

Further reasoning, the corpse was handled very secretly, if it wasn't for the capsized boat and being discovered, I'm afraid that Xiaocao would really be thrown into the sea without anyone knowing.

Thinking about it, Qiu Lan couldn't think of a better crime scene than Li Gang's house.

Qiu Lan, who looked solemn, looked at the information in her hand seriously, and the information about the crime scene and the results of the dissection of the corpse kept echoing in her mind.

Suddenly, she thought of a small fish tank in the corner of the hut, and although there was no water or fish in it when they arrived, there were still plenty of freshwater aquatic plants living in the crevices of the stones.

The tank was 30 centimeters in diameter and nearly 40 centimeters deep, a size that could completely submerge a person's head.

"Expert Cao, I thought about it. Qiu Lan raised her eyebrows, and her eyes burst into a bright shimmer, "I examined the pleural effusion of the deceased and the fluid in the lungs during the autopsy. ”

"However, since it was found in the sea, I didn't suspect the content of some of the plant particles at the time, but now that I think about it, the plant particles may have been taken away in a fish tank. ”

Qiu Lan raised her eyes, stared at the person in front of her seriously, and said solemnly, "Expert Cao, I think there is crown grass in that fish tank, and there will be seeds floating in the crown grass, if we find it in the pleural effusion, then there will be results." ”

Listening to her words, Cao Fan suddenly realized that he immediately understood the deep meaning, "Yes, crown grass is a freshwater creature, and it is impossible to have it in the sea." ”

After some processing and chromatography, Mo Heng put a sample of the female deceased's pleural effusion into the analysis and extractor, and Qiu Lan and Cao Fan were waiting in front of the computer.

Ten minutes later, the progress bar was getting closer, and the results were about to come out.

Ninety-nine percent, one hundred percent.

The results clearly appeared on the screen, and a variety of marine microorganisms were found in the pleural effusion of the deceased Xiaocao, as well as a small number of freshwater creatures, the seeds of Crown grass.

"Great, there's a crown grass seed. Mo Heng hooked the corners of his mouth, and a light smile appeared on his face.

However, Cao Fan, who was standing next to him, still frowned, his expression solemn, "However, this evidence does not completely prove that the female deceased drowned in the fish tank of Li Gang's house." ”

"That's right. Qiu Lan nodded in agreement, her eyebrows moving slightly, "Crown grass is a freshwater creature that many families will choose to raise in a fish tank, and it is very common, so this evidence can only give us clues, but it cannot directly prove where the fish tank is at the scene of the deceased's death." ”

After listening to the analysis of the two experts, the other forensic personnel couldn't help but feel a little lost, originally they thought that with this evidence, the murderer's crime could be implemented, but they didn't expect it to be a little worse.

But at this moment, Qiu Lan thought of another piece of information on the autopsy report.

That message might open up a new dimension.