Chapter: 65

When he arrived at the scene, Zhou Ta, who was wearing a duty uniform, was very motivated to take notes on the spot. Mu Zhiyang followed Jiang Yuan and squatted in front of the I-beam, bent over and took a look, and said, "How do you see if there are any fingerprints?" gone."

"You can use a magnifying glass or ultraviolet light to see." Jiang Yuan opened the inspection box he brought with him, and said casually: "In our current situation, it doesn't need to be so troublesome, just sweep the powder."

While talking, Jiang Yuan seemed to be ordering his troops, and from several gold, silver, black and gray bottles, he took out one containing gold powder, and took out a fluffy wine black brush.

Taking another look at the position of the reproduced photo, Jiang Yuan dipped a brush into the gold powder, and flicked the handle of the brush gently, so that the 400-mesh copper powder fell onto the relatively flat steel surface.

From Mu Zhiyang's point of view, Jiang Yuan's playing was exceptionally even, and his prelude was quite ceremonial.

"Technology is different. You are quite particular. We usually use silver powder." As a criminal policeman, Mu Zhiyang also had to scan his fingerprints frequently when he appeared on the scene. For some small cases, it is easier to do it yourself than to invite someone from the Criminal Division Squadron to come over.

Jiang Yuan observed the surface of the I-beam and said, "Silver powder has strong adhesion and is suitable for many occasions. It can be regarded as an all-purpose powder. But today's background is too light, and it is better to use gold powder for comparison."

"Your brush seems to be different."

"Pure squirrel hair. There are more than 200 ones. I want to come out specially."

"This broken brush is more than 200?" Mu Zhiyang was surprised.

"Squirrel hair is known as the Hermes in the brush." ​​Jiang Yuan flicked the brush and said with a smile: "Look at the tip of the hair, it is thin, straight, and soft, and it is not easy to damage fingerprints."

"Is this Hermes?"

"Because among the makeup brushes used by girls, squirrel hair is also the best. It is comfortable to brush fingerprints, and girls' faces are also comfortable to be brushed by it." Jiang Yuan then added: "It is the best match with gold powder."

Jiang Yuan was speaking, got down on his knees, leveled his right hand, and used the tip of the squirrel brush to gently wipe off the gold powder on the surface of the I-beam, as gently as if he was applying eye shadow to a beautiful woman.

As the excess gold powder dispersed, several incomplete fingerprints appeared in front of the two of them.

Mu Zhiyang also got down on his stomach and looked at those fingerprints carefully.

Incomplete fingerprints are mainly located at the fingertips, the middle part is not fully pressed, and the total area does not seem to be large.

"Is it still too long?" Mu Zhiyang was a little disappointed. There are more than 200 brushes, and the copper powder that is expensive at first sight is still used, but in the end, no complete fingerprints are produced.

Jiang Yuan first took out the camera, took a photo as clear as possible, then straightened up, looked directly at the fingerprint pattern, and said slowly: "It's a bit disabled, but it should be possible to gather more than a dozen features. point."

Mu Zhiyang looked at the fingerprints on tiptoe, and said in surprise: "This shape is not complete, and the lines are also blurred. Can you still come up with more than a dozen feature points?"

"You should look at the fingerprints of the arson case I did a few days ago." Jiang Yuan leaned over and took a few fingerprint photos, and then began to take photos of the scene.

Mu Zhiyang slapped his head: "You said my associative ability... well, it's you. It's really hard to handle this case with someone else."

If the same fingerprint was found by the county bureau's spot survey, the trace inspection would definitely have to pretend to be dismissive. Otherwise, what should I do? If you become such a dog, no matter whether it is Lao Yan or Xiao Wang, they will not be able to match.

Even if the integrity of the fingerprints were higher, the two of them would probably not be willing to do it.

Complete fingerprints can be matched with hands. Incomplete fingerprints are more disturbing as they become more deformed. The degree of incomplete fingerprints is not only troublesome, but it may also consume mental energy, and it must be an expert. The effort of level trace inspection ...

If a case solved by burning brain cells like this is just a few electric cars stolen, the police handling the case will feel embarrassed.

Jiang Yuan did it himself, so he didn't have so many long-winded words, and said politely: "I only know fingerprints. If the police station checks, there should be other ways."

"There is a way, but it may not be able to be solved. Stealing electric cars, many of them commit crimes on the move. They stay in one place for a while, and after spending all the money, they feel dangerous, and then go to another place. It's like traveling. .” Mu Zhiyang inexplicably felt a little envious.

Zhou Ta just came back after finishing the on-site record. Hearing the second half of Mu Zhiyang's sentence, he agreed: "Indeed. Some people also know that rabbits don't eat grass beside their nests."

"I'll compare the fingerprints as soon as possible." That's all Jiang Yuan can do. After a long delay, even if the fingerprints are compared, it will be troublesome for the suspect to run away—this is another trouble in reality, even if you know where the criminal suspect is, the procedures for handling the case in different places will consume time and energy. With burning funds, it's all trouble.