"Excuse me."

Lu Yu knocked on the kitchen door, but there was no response. He put his ear to the door and listened for a while, and there was a faint sound of children singing from inside, but he didn't listen carefully.

I had to go in. Lu Yu nodded at Sai Ling, who knowingly took out the Blue Star Shimmering Sword and held it in his hand on guard. Lu Yu shouted, "Offended!" He pushed the door open hard, and then rushed in. In this way, even if anyone hides behind the door and wants to sneak attack, they will lose the best opportunity because of his short stature, so that Seth behind him has a chance to make a volley.

But there was nothing. There was no one in the kitchen, except for an old radio playing eerie nursery rhymes on the prep table.

"Beware from Mary? Shaw's gaze;

She had no children, only dolls;

If you see her, don't scream;

Otherwise she will rip your mouth open and tear out your tongue. ”

The song is gloomy and weird, and the children's voice is also indescribably creepy, although it is the same word, it is twice as terrifying as when Lu Yu told it just now. Several people involuntarily shivered, and Seth quickly turned off the radio.

"Whew...... Now take out this hint, and the meaning seems obvious. Lu Yu exhaled a long breath, he could already vaguely smell a trace of blood wafting from somewhere, "Be mentally prepared, after knowing this ballad, you can't scream no matter what you encounter." ”

Zhu Xiaowen trembled and said, "Don't say as if something terrible is going to happen...... Ouch! ”

He couldn't help but scream, and then he tried desperately to suppress it. Everyone looked at his hand, and saw that in the corner blocked by the wide food preparation table, a right hand was weakly hanging on the ground, and it was still stained with blood.

"Hey, go check it out." Nao's face turned pale and touched Lu Yu. She is also strong-hearted, and she survived the bloody battlefield of "The Road to Survival" two days ago, but she is always a girl, and this bloody scene should naturally be a boy.

"What are you nervous about, this is the kitchen, I just spilled the ketchup." Lu Yu walked over with a relaxed face. As soon as he saw the scene behind him, his face became serious again. "Rest in peace, poor boss." He folded his hands in a salute and stooped to begin searching the body.

"Hey! Here you go again! Nao was dissatisfied, "I said you kid shouldn't have any necrophilia!" ”

"Nonsense! Searching a corpse when you see it is the iron rule of online RPG! ”

Lu Yu replied confidently. Bypassing the prep table, everyone saw the restaurant owner sitting in a pool of blood. He sat on the edge of the food preparation table, his hands hanging limply at his sides, his feet bent forward and backward, in a posture of trying to retreat before he died. But the most eye-catching thing is undoubtedly his face, that ordinary face is full of horror at this time, and his mouth is even more expanded to the limit, and his mouth is a shocking blur of flesh and blood.

Lu Yu looked at it carefully for a while, and said, "Sure enough, the tongue was cut off." ”

"Did the puppets do it?" Nao asked. Lu Yu nodded: "It seems that it is, the nursery rhyme says, 'Tear open your mouth and tear out your tongue' is probably the kind of scene we see." ”

He said as he continued to rummage through the corpse, "But if you leave a corpse here, you should leave some hints along with it......"

"Get out of the way, let the professionals come."

Zhu Xiaowen's majestic voice sounded behind him. He clasped his hands in front of his chest and put on an expert authority, which was many times better than the trembling appearance just now.

"Yo, I'm not afraid now." Seth quipped.

Originally, no matter how timid Zhu Xiaowen was, he had also experienced the baptism of siege by the infected in the last game, and he was not afraid of a corpse. After all, what he feared was only those supernatural beings.

Nao and Seth naturally gave Zhu Xiaowen a small place, they had heard Zhu Xiaowen's first game, and naturally guessed what he was going to do next. Lu Yu was slightly stunned, and also got out of the way with interest.

"So, next is ......"

Zhu Xiaowen nodded, took a deep breath, and then guided it to the five internal organs and six internal organs for a week, and finally gathered in the dantian and roared: "Scientific search is great!" Defend the family, defend the country, and keep the well-being! Don't let go of any clues! Finish the prisoner to death! ”

"Hey! Jump the great god this is! Lu Yu complained. Seth patted him on the shoulder and explained for Zhu Xiaowen: "No way, this is a necessary condition for the skill to be activated......"

The skill that Zhu Xiaowen launched at this time is called "Scientific Search".

[Name: Scientific Search]

[Type: Active, Permanent Mastery]

[Attribute: Puzzle solving]

[Effect: A random search item that may be useful for the current situation.] 】

[Consumption: Randomly consume a certain amount of stamina according to the different items generated.] When activated, you need to shout in one breath "Scientific search is awesome!" Defend the family, defend the country, and keep the well-being! Don't let go of any clues! Finish the prisoner to death! ”】

[Requirements: Puzzle F]

[Explanation: Do you believe it?] A hair, a drop of blood, a fingerprint can find out who the criminal is. Seemingly insignificant evidence, as long as it is guided by science, can play its unimaginable magical role and tell the astonishing truth of the case. No matter how clever the mind and cunning the criminal, it is impossible to escape the clutches of science. Science has an incomparable peculiar charm, taste the cultural charm of legendary science, let science change your life, arm your wise mind, and then you will be refreshed, so that youth glows with infinite joy in the halo of scientific development! 】

"From the starting language to the skill description, there is a smell of dancing gods, and it is not the guiding language of children's science and technology programs......" Lu Yu said with a blank eye. The name of this skill looks quite professional, but from the state at the time of activation to the description, there is an unreliable taste, and the resulting items have to be random, so it can only depend on Zhu Xiaowen's character.

A dazzling ball of light appeared in Zhu Xiaowen's hands, and the ball of light shrank smaller and smaller, and finally solidified into a sprayer-like gadget.

"Looks like it's going to come in handy." Zhu Xiaowen nodded with satisfaction.

Lu Yu leaned over and took a look, and praised it: "The legendary luminol reagent, it's the first time I've seen the real thing." It feels quite professional. ”

Luminol, also known as luminous ammonia, is often mixed with a mixed solution of hydrogen peroxide and sodium hydroxide in forensic science to identify blood stains, and is mentioned in many episodes of the famous longevity anime "Detective Conan". When blood stains are examined, luminol reacts with heme, a protein in hemoglobin that transports oxygen, to show blue-purple fluorescence. The luminol reaction in forensic science simply means that as long as there is blood splashed and stained on any object at the scene of the murder, no matter how it is removed afterwards, even if it is removed for a long time, as long as it is sprayed with luminol reagent and observed in a dark environment (or dark line of sight conditions), there will be a blue-purple fluorescence due to the fluorescence reaction in the original bloodstained place.

Everyone has heard of this thing more or less, and they have a tacit understanding to turn off the lights and pull the curtains to let Zhu Xiaowen play. First of all, starting from the vicinity of the corpse, Zhu Xiaowen sprayed it in all directions, and soon found a blood stain that had been wiped off.

"The bloodstains indicate the direction in which the killer escaped." Zhu Xiaowen said as he focused on the newly discovered bloodstains, sprayed some reagents near the direction it was heading, and quickly found the next bloodstain.

After a few attempts, they finally found the big cupboard in the corner. The blood stopped here, and after Zhu Xiaowen's spray, a small handprint-like thing appeared on the handle of the cabinet. It seems that the murderer hid in this cupboard after killing the boss.

The four of them looked at each other and nodded at the same time. Nao and Zhu Xiaowen quietly took a step back, while Seth once again took out the Blue Star Shimmering Sword. After the preparation was completed, Lu Yu took a deep breath and slammed open the cabinet door!

"It's a passage." Lu Yu said calmly, reaching out to stop the big sword that Seth was about to swing.

Behind the empty cabinet door is a tunnel that only one person can bend over. There was no light source in the tunnel, and when you looked into it from the outside, you could only see a shallow section, and you could vaguely see it turning a corner a few meters away, leading to a deeper and farther place.

Bloodstains can be seen at the entrance of the tunnel without spraying reagents, and it seems that the murderer did flee the scene from here.

"Judging by the size, that waiter should be able to get in." Zhu Xiaowen carefully squatted down and measured it with his eyesight. Combined with the nursery rhyme he had just heard again, he roughly had his own judgment: "There are two possibilities, one is that according to the nursery rhyme, the murderer was a doll that was ambushed in the kitchen in the morning, and it first killed the first restaurant owner to see it and cleaned the bloodstains. Later, the waiter came in, saw the body of the boss in front of him, and was either killed or coerced into the tunnel, and from the fact that no second body was found at the scene, it seems that I tend to be coerced by the doll. In this case, the doll can attack very quickly, because I barely remember hearing the boss scream, and maybe it was silenced just as it was about to make a sound. ”

He paused for a moment and said, "The second situation is relatively simple and realistic, the waiter imitated the nursery rhyme and killed the boss, simply washed off the blood stains and escaped from the tunnel. ”

"Do you have to explore the tunnels anyway......" Nao thought to herself. Lu Yu paid attention to the cabinet door, and opened and closed it several times. "What are you doing guarding the door?" Seth couldn't help but ask.

"Because it's fun." Lu Yu smiled, clenched his fists, and slowly turned around, "There is no trace of a handle installed on the inside of this cabinet door, and there is no spring for automatic closing, so ......"

"How did the door close?"

Before everyone could react, a muffled roar suddenly sounded behind them!