After watching Zack transform back into liquid form and leave through the hole, Li Lin and Caitlin returned to the oil tank factory along the same route.

Caitlin first wrote a letter and asked a law enforcement officer to go back to the upper city to contact Sheriff Grayson and ask her to send an elite team to implement the encirclement plan.

However, Li Lin asked her to add one more thing, that is, to go to Jiraman's workshop to bring the "Air Combat Machine Storm" and bring a few hundred rifle bullets.

In a sewer like environment, which is claustrophobic and narrow and has many places with large vertical drops, it is inconvenient for a large number of people to move around.

Having this flying robot would make solving the problem much easier, and it would also be a good opportunity to test its performance.

Afterwards, with the help of Code and Stanbeck, Li Lin and Caitlin respectively rinsed the power armor and boots with water for a long time.

Caitlin even used up a bottle of perfume specially prepared by the law enforcement officers and sprayed it all on her clothes.

Time passes by every second.

About an hour and a half later, Sheriff Grayson arrived at the factory with three elite teams of law enforcement officers.

When Code saw the fully armed law enforcement officers, he immediately ran into a staff dormitory and alerted Li Lin and Caitlin who were taking a break and chatting.

As soon as she walked out, Caitlin happened to run into Grayson who was walking over and greeted her: "Good afternoon, Sheriff Grayson."

She and Grayson have a pretty good relationship.

Three years ago, Caitlyn narrowly defeated Grayson in a field shooting competition held in Piltover.

Since then, the two of them have become friends.

"Caitlin, do you have any clues?" Grayson's tone sounded serious.

"We have a clue. The murderer may have gone down the sewer to the middle level of the ditch." Caitlin glanced at Li Lin beside her, "But Li Lin found a way."

"Well, it's good that there is a way... By the way, Caitlin, take a look at this first."

Grayson took a folded piece of paper from his adjutant Marcus behind him, unfolded it, and handed it to Caitlin.

"This is……"

Caitlyn raised her eyebrows, recognizing that this style of paper was used by the Piltover Law Enforcement Department for writing reports.

"According to the confession of the survivor whose half body and jaw were dissolved by the alchemical venom, the murderer was not human..."

As Grayson explained, Caitlin quickly scanned the contents of the paper:

[Update: La Quintava, written testimony]

[Suspect Summary, as Described in the Confession]

Name/Known Name: Twitch

[Gender: Male (unconfirmed)]

Age: Unknown

Height: Approximately 1.5m (hunchback)

【Weight: less than 45kg (wet)】

Distinctive feature: a giant rat

[Status: Absconding; Armed; Chemical Poison; Extremely Dangerous, Do Not Provoke]

【……】

Caitlin's expression turned ugly. "Damn, it really is a mouse..."

On her list of disgusts, cockroaches are at the top, followed by rats.

"Also?" Grayson caught a key word in her words. "Did you also find out that the murderer was a rat?"

"Yes, I found plague rat hair in the murderer's hideout in the sewer. Combined with the testimony of the survivor, Valorie Orlante, I surmise it was a giant rat."

Caitlin added, "I think it's most likely mutated due to contact with alchemical fluids discharged into the sewer."

"But can alchemical liquid achieve this? It can actually make a plague rat mutate into a being with human emotions and thoughts?"

Grayson obviously didn't know much about alchemy technology. "Olante and Qintava both mentioned that the rat could talk..."

What's a mouse? I've seen life forms formed from pure alchemical venom...

Caitlin glanced at Li Lin beside her with a flickering eye, but did not answer Grayson's question.

"Now that we know the characteristics of the murderer, it will be much easier for us to consider a plan to deal with him."

As he spoke, Grayson shifted his gaze to Li Lin beside Caitlin and pointed behind him.

"Mr. Li Lin, is that the robot you mentioned in Caitlin's letter?"

Li Lin looked in the direction she pointed and said, "Yes, thank you for your hard work."

"No, it's just a robot. It's not that heavy. It shouldn't be a problem for a rigorously trained elite law enforcement officer. However..."

Grayson paused, his tone tinged with thoughtful curiosity. "It should be a combat robot, right? But I've never seen the firearm mounted on its left hand before."

"Just a light machine gun, with a large chambering capacity to provide sustained suppressive fire."

Li Lin briefly explained it to her, "This is also the main reason why I asked you to bring a few hundred rounds of ammunition."

After saying that, he walked straight towards Storm, took out the ammunition slot on it, and asked several law enforcement officers to load bullets into it.

Grayson waved towards the distance, asking the law enforcement officer to follow Li Lin's instructions, and then whispered to Caitlin:

"We're not at war right now, and Mr. Li Lin is developing such a dangerous weapon...and Councillor Jiraman actually agreed to it?"

"This is the agreement that Mom and Li Lin made before. You can't interfere with his research."

Caitlin looked at the young man's back in the distance, her eyes softening.

No matter what, she will always stand on her lover's side and speak for him.

"He said that peace is based on the guarantee of force. Having weapons but not using them and having no weapons at all are two completely different concepts."

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