Although they only picked up a roll of undeveloped film, Zhou Tang had a lot of directions they needed to investigate.

First, they have to deal with psychiatric hospitals, looking for the provenance of the film.

As long as you can find out who the film came from, you may be able to unravel the mystery of the Z bandits!

Second, they can also start with the film itself, get all the information on the film, and see if they can find evidence that they can use.

Then, they can also reopen the Z bandit kidnapping case and explore new clues from past data.

Finally, they can also visit the victims or their families to see if they can find a breakthrough in the confessions of these people......

It is precisely because of so many investigation directions that the workload of Zhou Tang and others has increased correspondingly.

As soon as he got to work the next day, Zhou Tang assigned tasks to the detectives and asked them to devote themselves to the investigation of the Z bandit case.

The agents are also in high spirits, hoping to take advantage of this opportunity to find out the truth.

Although the Z bandit case has changed over time and little is known to young police officers, this case has always been one of the major cases that the Anzhou police attach the most importance to.

If this case can really be solved, it will undoubtedly be a great achievement, not only to solve the identity of the Z bandit, but also to seek justice for those victims 22 years ago!

After assigning the task, Zhou Tang and Chu Juntao stayed in the office.

Zhou Tang is responsible for summarizing, sorting and analyzing the case, while Chu Juntao queries various relevant materials through the Internet.

At this moment, Zhou Tang sorted out the general context and time node of the Z bandit case on the whiteboard, and he quickly discovered a more important problem!

You must know that the Z bandit committed crimes and disappeared in 98 years, and since then, the Z bandit has disappeared.

However, the Liumu Village Psychiatric Hospital was relocated 5 years ago, 15 years ago, and there was a gap of 17 years since 98!

So......

If the film is really left by the Z bandits, then could it be that there is a Z bandit among them, who is hiding in a mental hospital?

Isn't it better to start with patients who have been in a psychiatric hospital for many years, or doctors or staff who have worked for many years?

Thinking of this, Zhou Tang immediately wrote down this idea from his notebook, planning to wait until the information of the mental hospital was perfected and then compare it first.

As soon as he remembered this idea, the captain Yan Bin called Zhou Tang.

He informed Zhou Tang that today's case report analysis meeting would start at 6 o'clock in the evening, and asked Zhou Tang to collect as much detailed information as possible and report it well when the time comes!

"Zhou Tang, I know you are disgusted with formalism," Yan Bin understood Zhou Tang's temper, and immediately added, "But people from the provincial department came today to solve the case!"

"When the time comes, they will share the information of the task force with us, and they will also tell all the situations encountered during the investigation, perhaps, it will really help solve the case!"

"Okay, I understand!" Zhou Tang promised, "Don't worry!"

As soon as I hung up Captain Yan's phone here, the door of the office over there was pushed open by forensic doctor Zhang Rong!

But seeing Zhang Rong chewing gum, he took a copy of the information and put it on Zhou Tang's table.

"Wouldn't it?" Zhou Tang joked, "It's just a report, why did you Zhang Da forensic doctor personally send it?

"Don't be poor!" Zhang Rong said, "Go to the toilet by the way, and besides, there are some things I have to tell you, which are not clearly written in the report!"

"Oh......" Hearing this, Zhou Tang immediately realized that Zhang Rong's report was very important, and immediately picked up the report and asked, "What's the matter?"

"Found a fart!" Zhang Rong said as he chewed gum hard, "A lot of things have been ruined by those two idiots!"

"For their live broadcast, they actually wiped the film clean with a cloth!"

"Damn!" Zhou Tang frowned, "These two ...... Oh, but ......," he thought for a moment, he said, "and they can't be blamed entirely on that?"

"Who would have thought that there would be a picture like that on film?"

"That's right, if they don't bring the photos to report the crime, we don't have to be so desperate now!" Zhang Rong pinched his waist and said, "But it's very infuriating to destroy such important evidence!"

"Moreover, they also exposed a third of the film, emmm, what if there is a selfie of the Z bandit in the exposed photo?

"Shall we regret our bowels?"

"This ...... It shouldn't be very likely, right?" Zhou Tang said, "The Z bandits are extremely cautious guys, even if they take a selfie, they can't take themselves and the hostages on the same roll of photos, right?"

"Forensic Doctor Zhang," at this time, Chu Juntao asked from a distance, "Now that the technology is so advanced, can you try to restore those exposed photos?"

"Hey, you kid speaks lightly!" Zhang Rong complained, "Didn't you hear a saying in the photography world? I'd rather be underexposed than overexposed, like this kind of direct exposure, even if the Da Luo Immortal comes, it can't be saved!"

"Oh......" Chu Juntao was deflated and immediately closed his mouth.

"So," Zhou Tang said, looking at the report, "it's not very likely to get fingerprints or dander tissue from film?"

"0," Zhang Rong said dryly, "nothing was measured, those two idiots wiped it so cleanly that they didn't even extract their fingerprints!"

At this time, Zhou Tang saw that the report showed that the film found to be Kodak produced in 96, which was the most popular one in that era and had many users.

Further down, there is also the results of the forensic department through the comparison of photosensitive pixels and professional data, the camera used by the photographer should be one of the Panasonic brands, and a list of corresponding models is listed later......

"Although the photos are ordinary," Zhang Rong pointed to the information Zhou Tang saw, "but the camera is relatively professional, and at that time, the price was still relatively expensive, basically more than 3,000 yuan......

"And ......," he said, pointing to another part of the document, "the photographer's technique is relatively amateurish, and the focal length and aperture are not adjusted appropriately in many places, and several of them are even ...... bad."

"Oh......" Zhou Tang pondered and said, "The photography skills of the Z bandits are not very good, but they hold unusual cameras and use ordinary film ......"

"Also," Zhang Rong said, "we checked the degree of oxidation on the outside of the film, and found that the film should not have been placed on the outside for a particularly long time, and the plastic sticker on the film was well preserved, and there were not too many scratches and damages on it, which shows that ......"

"Explanation......" Zhou Tang said, "The film has been well preserved, and it was only exposed because of an accident, right?"

"Well," Zhang Rong nodded, "that's basically what it means! If you can find out where the film was stored before, maybe there will be more surprises!"

"But......" Chu Juntao hurriedly asked, "We have searched the entire psychiatric hospital, if there is really a surprise, it should have been discovered a long time ago, right?"

"That's right," Zhang Rong said, "then we'll have to look for it again!"

"Possibly...... The owner of the film just accidentally lost the film!" Zhou Tang guessed, "Perhaps, he also wants to find this film very much?"