"During this time, I have caused you a lot of trouble, and I really don't want to ...... it."

Aizawa said as he bowed and thanked Takashi Imai, who had been following them for the past few days, and his colleagues in the forensic class, who had worked a lot at the scene of Professor Noguchi's murder not long ago. Seeing this, Hanagata also hurriedly followed behind Aizawa's seniors and saluted everyone.

"It's a shame that we couldn't find the real killer of Professor Noguchi in the end, but it's a pity!"

Takashi Kanai also hurriedly saluted Aizawa and Hanagata. Since the end of the second investigation of the scene of Professor Noguchi's murder that day, Aizawa and others have leaked the news of their imminent departure to Hokkaido. Because the results of the second investigation showed that the scene of Professor Noguchi's murder had been destroyed and it was impossible to collect even a complete fingerprint. Naturally, Aizawa and Hanagata have no need to stay here.

"Hey, I'm really ashamed to say that I've been in the forensics class for so many years, and it's the first time I've encountered such a clean scene. Blame the murderer for being too cautious. In order to sabotage our investigation, the scene was cleaned up as it is now. ”

The person in charge of the forensic class also felt very regretful, and although he had tried his best, he still returned in vain.

"There's no way around it, who made us one step behind the murderer!, but before I leave, there's one more thing I want to pass on to you!"

At the end of his words, Aizawa suddenly took out a business card placed in a plastic bag from his pocket and handed it to the person in charge of the Hokkaido Identification Division who came to see him off. After the other party took the business card handed over by Aizawa, he took it very curiously and looked at it carefully.

"Asuda Housekeeping, President Naoto Asuta What does this mean?"

The other party carefully looked at the front and back of this business card, and then asked Aizawa with some doubts.

"The person on the business card is the real murderer we suspect to have killed Eiji Noguchi so far! The business card has the fingerprints left by the other party, and if the scene is not destroyed, we can find direct evidence of the other party's murder through this business card. Hey, if only the suspect's accomplice had missed something, even if only half a fingerprint was found, it would be enough for us to convict the suspect......"

Aizawa let out a long sigh and then fell silent, but after a while, Aizawa still asked his colleagues in the forensic class with some reluctance.

"I remember that at the beginning, didn't the police suspect that Professor Eiji Noguchi had committed suicide by burning charcoal, so is the charcoal basin found at the scene still in the hands of the police?"

As soon as Aizawa said this, the colleagues of the identification section of the Hokkaido Prefectural Police Headquarters, who were still depressed, suddenly raised their heads and said with a happy face:

"Hey, we do keep this charcoal basin because it is important evidence related to the cause of death of the deceased. That charcoal basin seems to be in our evidence storage room right now!"

"So, what is this charcoal basin made of, and is it possible that we can find the fingerprints left by the suspect at the scene?"

"I remember that the charcoal basin was made of metal, and although it was a little difficult, if there were really the suspect's fingerprints on it, we could have a way to get it. ”

The person in charge of the identification class said to Aizawa and Hanagata with great certainty.

"Well, can you really get the suspect's fingerprints? That thing has been roasted by charcoal fire at the scene, can fingerprints still be obtained through technical means under such circumstances?"

Takashi Kanai asked the seniors in the forensic class in disbelief. For the general principle of fingerprint collection, Takashi Kanai still knows a little bit about it. The principle is mainly based on the distribution of salts and proteins on the fingers, using chemical reactions to make these traces appear under fluorescence. However, because the material is metal on the surface, and it has been roasted at a high temperature enough to denature the protein, for those fingerprints on the surface of the charcoal basin, Imai Takashi has long lost hope.

"Hey, most people are artificially heated, which will make the fingerprints left on the scene disappear automatically. However, with current technology, it is not impossible to collect similar fingerprints. If a small amount of special means is adopted, there is still hope that the fingerprints will be successfully reproduced. ”

Because of Aizawa's unintentional words, the already exhausted investigation work has new hope, and almost everyone present is looking forward to the next good news.

"I really didn't expect it! I didn't expect to see new investigation clues before leaving. Unfortunately, we have already booked a flight back to Tokyo, and the Forest Police Department has already made new work arrangements. ”

"It's a shame that we can't wait a few more days?

"I'm sorry, although we also want to stay and wait for your results, but the Metropolitan Police Department has also made new discoveries, and we have to go back to accept a new mission from the Forest Police Department. ”

Aizawa shook his head, then reluctantly squeezed out a smile, and then he and Hanagata bowed again to thank the people who had come to see them off. Wait until you return the salute. Aizawa led Hanagata step by step towards the vehicle that took them to the airport.

"I didn't expect that before leaving, the colleagues of the Metropolitan Police Department could leave us such an important clue, put away this business card first, and then find out the charcoal basin from the evidence storage room when we returned, and then carefully look for it to see if there are any suspicious fingerprint marks on it, and we must collect these traces one by one. Got it?"

"Hey!" with an exhilarating shout, everyone immediately reinvigorated.

"How about it, Kanai-kun, why don't you come with us to the laboratory and wait for the final results of the test! I think if it goes well, we should be able to find the fingerprints soon!"

"Well, senior, can you give me that business card first, I want to take a picture of this business card, and by the way, we will also make a copy of the search lesson, so that we can track down the suspect's information as soon as possible." ”

"Well, well, I'll leave it to you first, but remember, don't break this card. ”

"Don't worry, senior!"

As he spoke, Kanai took the business card from the other party's hand and put it in his pocket. Then, when he saw that everyone was leaving, he quietly walked to a secluded place, and immediately dialed the phone of a person who was very important to him.

"30 seconds have passed!"

"A minute has passed!"

There was no answer on the other side of the phone, which made Kanai feel very bad. Could it be that guy has already been arrested by the police?

"This damn layman, how can he leave so many tricks, and it hurts me to stick your ass, is it really a dry meal when the Metropolitan Police Department searches a lesson?"