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The video was rewound to 12:30, with all the screens collectively recalled. Then Ravelent looked at Gao Guang and asked, "What about that monitor?"

Gao Guang shook his head and said, "I don't know yet. Wait a moment and see."

His memory was not particularly outstanding, but Gao Guang remembered that the footage was probably after 12:30. So after playing at normal speed for four minutes, which was 12:34, a figure suddenly walked out of the door.

Ravelent immediately asked, "Does he have any suspicion? Who is he?"

Renato sighed softly and whispered, "My personal doctor."

Everyone immediately looked at the timid personal doctor. Several cameras captured him, but he just walked around casually in the courtyard. He didn't make any complicated body movements, didn't drop anything, and didn't even walk on the lawn. He just walked back and forth on the path between the lawns without deliberately stopping.

But Gao Guang suddenly said, "Stop, stop."

The screen immediately froze, and Gao Guang hesitated a bit and asked, "Everyone, is his behavior abnormal?"

The detective, who looked dull but occasionally had sharp eyes, immediately said, "No, all his movements are normal, with stable pace and distance between steps, and coherent actions. He didn't use sign language or body gestures in any of his movements."

Gao Guang fell silent for a while. He didn't have much confidence in his judgment, and now he felt that he might be wrong.

"Um, he pointed to the swimming pool."

Gao Guang pointed to the screen cautiously and said, "Look, he seems to be doing body stretching exercises, but his arm is pointing to the swimming pool. He waved his left arm first, turned it twice, and then turned his right arm. But his right arm... straightened out and pointed to the swimming pool."

Robert shook his head, Renato sighed softly, but Ravelent shrugged and said, "This connection is too far-fetched."

Gao Guang whispered, "But if he was just taking a walk, who would take a walk at the strongest time of the sun at noon?"

Renato smiled bitterly and said, "He takes a walk after every meal, not for too long, about ten minutes, but he walks at noon or in the afternoon, depending on his habits. Unless the weather is particularly bad, sometimes I walk with him."

After proving the doctor's habits, Renato thought for a moment and said, "And he didn't know I was going to swim, at least not at that time."

Ravelent sighed and said, "It doesn't matter if the idea is wrong. At least we have ruled out one possibility. We..."

"Um, wait a minute."

Gao Guang didn't have to put the hat of the mole on the doctor, but he just felt that there must be a mole leaking information, otherwise, Graev would not have known in advance.Several people looked at Gao Guang again. Rafflent was clearly impatient and frowned, "Do you have any other ideas?"

Gao Guang swallowed and said, "I think that only a few people live in this house, three maids, Sam and his colleagues, Mr. Salvini and his two children, and a doctor."

As he spoke, Gao Guang's confidence grew, and his tone became more firm.

"Six bodyguards, five dead and one missing. Their suspicion can be ruled out. The three maids knew that Mr. Salvini was going to swim, but they left the house after two o'clock, so their suspicion can also be ruled out. And this gentleman who monitors the surveillance, their suspicions can also be ruled out. That leaves only the doctor, because it's not possible that Mr. Salvini and his children would betray themselves, right?"

Rafflent shook his head, and the dull detective immediately said, "So you suspect the doctor because he left the room and went for a walk at an inappropriate time? Well, if we use the process of elimination, there is a possibility, but this speculation is weak unless there is a clearer chain of evidence."

Gao Guang immediately said, "I didn't know that the pool could be heated. Yes, I didn't know that the water in the pool could be heated. So until the maid went outside to lay towels, I didn't know that Mr. Salvini and his family were going to swim. But the doctor is likely to know!"

Renato immediately said, "Ask my children if they talked to the maids about it, and ask if they talked to the doctor about me swimming. But there should be no problem, because it's a special time, and Sam turned on the switch to heat the pool. Even the maids only prepared after Sam notified them."

Gao Guang urgently said, "Please let me finish. You don't need to say anything. What if the doctor himself noticed that the electricity usage had increased? Everyone, doesn't heating the pool require electricity?"

This statement made everyone dumbfounded.

Gao Guang said in a daze, "There should be an electricity meter in this house, right? Don't you have to pay for electricity? Heating the pool should be very power-hungry, right? It's the most power-hungry, right? If you see the electricity meter turning very fast, you should know that the pool is being heated, right?"

No one responded, so Gao Guang had to say again, "Is it... free to heat the pool?"

Renato said in a daze, "Who would pay attention to that?"

The dull detective suddenly covered his mouth and trembled, "Oh my God, it's such a simple and obvious fact! Where is the electricity meter?"

Renato swallowed and said, "It seems to be in this house, I don't know..."

The person sitting in front of the table, responsible for monitoring the surveillance, said, "In the electrical and appliance room next to the maids' room. Do you want me to take you there?"Lavrent stood up and whispered, "No door? No lock? Anyone can see?"

"There is no door in the distribution room. The servant's quarters and the bodyguard's room have small doors leading outside. We also enter the monitoring room through that small door, which is for the staff. The owner of any villa would not normally use the small door. The electric meter has a digital display, very bright and easy to see. Hmm, you can tell at a glance."

The villa is too big. Renato may know that there is such a door in his own home, which is specifically for the servants to use, so that the servants do not have to go out and pass under his nose. Obviously, Renato would not care about where the electric meter is installed.

So the doctor can look at the electric meter casually, even if someone sees it, they won't think there is a problem.

These are the most wasteful people of energy in the world. What can we say about them? How much electricity does it take to heat the entire pool? Probably no one present knows, except for Gao Guang, who is used to being poor and thinks about electricity bills.

Clap, clap, clap, Renato slapped his thigh.

Lavrent suddenly slapped himself on the forehead, saying, "I didn't think of the electric meter, but who cares about electricity bills..."

The detective suddenly clapped his hands and shouted, "Combining the insider and technical surveillance, with just a simple prompt, they only need to detect the temperature of the pool water to know everything. The best swimming time is from three thirty to five in the afternoon! The sun is not so strong, but it can tan the skin into a healthy wheat color... Just knowing that the pool is heated is enough! Enough! The timing is right!"

No one even looked at the electric meter. Lavrent sighed and said, "Gentlemen, go and control the doctor, right now!"

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