The world of American TV series: Starting with the L.A. Patrol.

"Okay, now we know the murderer has his own car, but that doesn't help us find him. I didn't see any surveillance cameras along the way, and I even doubt that even if we got the license plate number, it would be difficult to find the murderer."

Aubrey scratched the back of his head with a bitter look on his face. Even when he was in Africa, he had never felt that handling cases was as difficult as it was now. Although the Tanzanian police were not very capable, they were quite cooperative.

Moreover, they were escorted all the way by enthusiastic local people (Old Muto and his militia), so there was no need to worry about any danger even when dealing with small local armed forces.

But it is completely different in Mexico. Even the police, who are supposed to bring a sense of security to the people, cannot protect themselves. They have to cover their faces when handling cases in uniform.

If this case is really related to a larger drug trafficking group, it will not be something that their wanted criminal team can handle.

Even out of consideration for the safety of his team members, Jubal would apply to evacuate Mexico as soon as possible.

In fact, even Jack was reluctant to confront the Mexican drug cartels in an official capacity. Not only were there too many obstacles, but it was also time-consuming and laborious.

Planning an operation against a large-scale drug trafficking group may take months or even years just to gather intelligence during the preliminary preparation process. Sometimes, agents have to be sent deep inside to conduct undercover work for years.

"Don't think too much about it. The current clues do not directly lead to the murderer being a member of a drug cartel. In addition, several large drug cartels currently active in Tijuana are maintaining superficial peace and there are no signs of war."

Jubal tried to boost morale, but to little effect. After all, the team had maintained a 100% crime-solving rate since its establishment. Although everyone did not deliberately publicize it, they were all proud of it in private.

If the mission really ends in failure because of involvement with a large drug trafficking group, everyone can understand that, but it is still very unpleasant and embarrassing.

"Did you find anything?" Jack collected his thoughts and found that Clay had been squatting in front of the two tire tracks, observing something carefully, and from time to time he would pick up a handful of sand and put it under his nose to sniff.

Clay looked serious. "This car is leaking oil. Although it has almost evaporated, I can still smell something. I'm just not sure if it's gasoline, diesel, or motor oil."

Hannah immediately became interested, squatted down beside him, and picked up a handful of sand and sniffed it carefully.

Just when Jack was wondering if she was going to stick out her tongue to lick it, the girl smiled smugly and said with certainty, "This is biodiesel."

"You can smell this?" Jack grabbed her wrist suspiciously and sniffed her fingertips. There was indeed a slight smell of diesel, but it was stinky and sour.

Biodiesel is a fuel made from the alcoholization of discarded animal and vegetable oils, which is commonly known as the recycling of waste cooking oil.

This is a green energy that is highly recommended by environmental protection organizations. Of course, anything associated with the word "environmental protection" usually means a high price.

"This is Mexico. Who would use this biodiesel as fuel for their car?" Aubrey felt a little unbelievable.

"Extreme environmental protection organization? Maybe the murderer is also an American." Hannah guessed.

People who are busy making a living all day don’t care about environmental issues. Only rich people who want to take a private jet trip just to eat a cake will worry about it.

"OK, another clue. I'll ask Alice to check if there are any extreme environmental groups in California operating in Tijuana."

Before Jubal finished speaking, he saw Lopez and Jiejie walking towards him through the alley, so he asked, "Did you get anything from the bar owner?"

Jiejie sighed, "We asked the boss, the bartender, and the waitress, but there were too many tourists last night, and many of them were teenagers around the same age as Li and Rosie.

We have gained nothing but a lot of complaints and grumbling.”

"I seem to have seen this mark somewhere." Lopez stared at the blood-spattered earth wall for a long time, pointing his finger at a black graffiti that looked like a stick figure.

The dirt wall was covered with similar graffiti, but the one he pointed at looked newer, probably drawn with charcoal.

Everyone looked in the direction of his finger for a long time. After a long while, Aubrey asked hesitantly, "Is this a painting of a gallows?"

Lopez nodded repeatedly. "Yes, that's right. This is the symbol of the Hanged Gang. This sign shows that this is their territory. They are a gang of lawless bastards."

"Are they also dealing drugs? Could the bag of cocaine that Li took from the bathroom be related to the Hanging Gang?" Aubrey asked quickly.

"All the gangs here are more or less related to drugs." Lopez always wears a mask. Although he has become a CBP agent now, he often has to travel between San Diego and Tijuana, appearing at various crime scenes related to drug cartels.

Although everyone couldn't see his expression, they could still hear a hint of helplessness in his tone.

"The Hangman Gang? They don't sound like the kind of people who would kill people with sickles, but maybe they're a bunch of Harley riders who believe in environmental protection." Aubrey's expression suddenly relaxed, and he regained his usual optimistic attitude.

There is no gang with such a rustic name among the several drug cartels active in Tijuana, which means that if the murderer is indeed a member of the Hanging Gang, he is the type that the Most Wanted Criminals Team can deal with.

As expected, according to Lopez's introduction, the Hangman Gang is just a motorcycle gang with about 20 members, and the boss and main backbones are all Latin Americans.

Although they also engage in some drug smuggling, they mainly sell some bulk goods while meeting their own needs, which can be matched with that small bag of low-purity and inferior cocaine.

There is no better suspect at the moment, but since the case happened in the territory of the Hangman Gang, it is only natural to ask the local gangsters.

Even if they didn't do it, it's a good idea to find out if there are any suspicious people around recently and get some local "news".

"They are mainly active around Aquileia Beach, but now is not the right time, the guys will not gather until after 10pm to start their party."

Lopez made an inviting gesture and said, "It's still a while before dark. Before that, how about I take you to the best restaurant in the city for a meal?"