"I really don't know!" Xu Zhiji shook his head again and again, pointed to the sack in the corner of the wall and said with a sad face, "Team Leader Lin, when I boiled chili water, I directly held the sack and poured it into the big iron pot, how do I know when these oleander leaves were mixed in!" ”

Lin Jiangbei turned around and walked to the sack in the corner, poured all the remaining dried chili peppers on the ground, and then squatted down and rummaged carefully, but did not find the oleander leaves from inside.

In other words, oleander leaves are not originally mixed with dried chili peppers, but can only be added during the process of boiling in a large iron pot.

"Xu Zhiji, so did you leave the stove room in the process of boiling chili water?" Lin Jiangbei asked again.

"After I added the chili peppers to the big iron pot, I opened the damper of the stove, and then went to the torture room below, and after half an hour I came up and saw that the chili water was boiled, so I closed the damper of the stove and scooped the chili water into the wooden barrel and lifted it down." Xu Zhiji was reminded by Lin Jiangbei, and suddenly looked at Lin Jiangbei excitedly as if he had been injected with a heart booster, "Team Leader Lin, could it be that within half an hour of my departure, someone slipped into the stove room and added oleander leaves to the big iron pot?" ”

"It's a possibility!" Lin Jiangbei nodded, turned his head to look at Gu Siqiang and the other two torturers, "Did anyone of you leave the torture room alone during the torture?" ”

Gu Siqiang and the other two torturers looked at each other, and their faces became a little ugly, because the three of them had left the torture room alone during the torture.

In other words, they all have the conditions to go to the stove to add oleander leaves to the big iron pot, so their identities become the same as Xu Zhiji, and they have become poisoning suspects.

Glaring at Xu Zhiji hatefully, Gu Siqiang said: "Team Leader Lin, not only us, but also other personnel in the secret torture department may also be suspected of poisoning. Because they also have the conditions to sneak into the stove and poison them! ”

At this time, even Chen Haitao's face became ugly.

Because what Gu Siqiang said is right, if he doesn't talk about others, even he can be regarded as a poisoning suspect. Because after Du Chenghu left, he stayed alone in the office above, and the key is that he could not find a witness to prove that he did not leave the office during this period.

Du Chenghu's head suddenly became as big as a fight.

There are a total of 12 people in this secret torture department, including the guards guarding the gate, and if everyone is treated as a poisoning suspect, doesn't that mean that the entire secret torture department will be paralyzed?

I thought that I would make a great contribution to the capture of Wang Longfei, but I didn't want my backyard to catch fire!

"Jiangbei," he looked at Lin Jiangbei with a pleading eye, "Do you have any way to quickly identify the suspect?" ”

Lin Jiangbei is actually quite big, he didn't expect to encounter such a situation. In other cases, he could easily tell who had touched oleander leaves by the smell of his fingers, by virtue of his golden fingers of smell.

However, there is a large pot of chili water here, especially the four torture officers in the torture room, who have all been exposed to chili water, and even if they have touched oleander leaves, the residual smell will be masked by the strong smell of chili water.

What's more, Gu Siqiang just went outside to pick up oleander leaves, even if there was no effect of the smell of pepper water, Lin Jiangbei had no way to tell whether the smell of oleander on Gu Siqiang's hand was left before, or when he just went to pick up oleander leaves.

But in this case, Lin Jiangbei could not hesitate and be ambiguous, Lin Jiangbei believed that if he did not stand up, the current situation could not be resolved quickly.

"Of course there is a way," Lin Jiangbei smiled easily, looking like he was in his chest, "With the student's method, even if the poisoning suspect cannot be quickly screened, the scope of the suspect can be narrowed." ”

"Hah!" Du Chenghu slapped his thigh excitedly and said, "Jiangbei, I knew you must have a way!" ”

For Du Chenghu, it is already a big scandal that there is a traitor in the secret torture department, if this traitor cannot be found and the entire secret torture department is paralyzed, then it is estimated that his position as the head of Hangzhou Station will be given to others! So when he heard that Lin Jiangbei had a way, he was so overjoyed!

"Well, Inspector General, I would like to ask you to get everyone else in the secret torture department together so that I can take action!" Lin Jiangbei said.

So Du Chenghu immediately went out and summoned all the members of the secret torture department, including the gatekeeper, and gathered them in the basement together with Chen Haitao, the secretary of the Hangzhou station, and Gu Siqiang, four members of the torture team.

Lin Jiangbei glanced at the twelve members one by one, and then asked solemnly, "Have any of you ever touched oleander leaves today?" If so, please raise your hand? ”

"Team Leader Lin, I've been in contact with it, and you've all seen it just now!" Gu Siqiang raised his hand.

"Except for Team Leader Gu, has anyone else touched oleander leaves?" Lin Jiangbei motioned for Gu Siqiang to put down his hand, and continued to ask.

Including Chen Haitao, none of the other eleven raised their hands.

"Hehe, that's good!" Lin Jiangbei said, "Since the rest of the people have not touched oleander leaves, then the next thing will be easy to do!" ”

Saying that, Lin Jiangbei waved his hand, and saw Ye Luping walking in from outside with a large tray, on which were a handful of cotton swabs, twelve glucose ampoules and a large bottle of distilled water that he had just taken from the clinic of the torture department.

Lin Jiangbei took the tray from Ye Luping's hand and put it on the table, knocked open all the twelve ampoules with a tool, poured out the glucose liquid inside, and washed them one by one with distilled water in the big bottle, and then set them one by one, then turned his head and said to Zhou Fengshan and Du Chenghu: "Principal Zhou, Inspector General, these things can help us to do screening." ”

"Oh? Can these be screened? Zhou Fengshan asked with great interest, "What is the specific screening method?" ”

"It's easy!" Lin Jiangbei said, "Because the poisoning suspect crushed the oleander leaves with his hands, then there must be some oleander leaf powder left on his hands." Students simply take a cotton swab dipped in distilled water and sample each person's finger, then add the gallnut solution and let it sit for an hour. Because if there is residual oleander leaf powder on the fingers, the gallnut solution will appear pale green because it reacts with the cardiac toxic glycosides in the oleander leaves. If not, the gallic solution does not change color. This way we can tell whose hands have touched oleander leaves! ”