Start with Psychic Forensics

Fang Ze fell into deep thought.

Shen Kai waited for a while, but when Fang Ze didn't see anything, he couldn't help asking, "Fang team, is there something wrong with the vitamins?"

Fang Ze said softly, "There's nothing wrong with vitamins, it's just"

He didn't finish.

At this time, Luo Bixin said: "Let's check the residue in the stomach, we will have an answer soon."

Fang Ze didn't speak, he turned his eyes and looked at the trash can beside his desk.

Since they found Zheng Xuyao ​​yesterday, the trash can has not been emptied: passed.

"Give me the gloves."

Fang Ze stretched out his hand.

Behind him, a criminal policeman stepped forward quickly, handed the gloves to Fang Ze to wear, and squatted in the trash can to rummage.

After a while, he took out a lunch box.

"It's not what you ordered"

Fang Ze turned to look at Shen Kai.

Shen Kai shook his head and said, "No, it should be Zheng Xuyao's meal yesterday."

"Um."

Fang Ze opened the lunch box, and there were food scraps inside.

He leaned in and sniffed carefully.

After a while, his face immediately froze.

Although the taste is very light, Fang Ze can still distinguish it.

"Potassium arsenate!"

Hearing Fang Ze's words, Shen Kai said strangely: "Fang team, is potassium arsenate poisonous?"

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Fang Ze threw the lunch box back into the trash can, got up and said, "Zheng Xuyao ​​has potassium arsenate in his diet."

"This shadow is not easy."

In the office, several people looked at each other, not knowing what Fang Ze meant.

Luo Bixin said: "Fang Ze, you mean that the shadow was poisoned yesterday and only happened today"

“Exactly around six o’clock”

"The card is so accurate"

"How is this possible?"

Fang Ze turned around and said, "It didn't happen today."

"Potassium arsenate is toxic, but not strong, and generally does not cause physical discomfort."

Hearing this, Luo Bixin was even more puzzled: "How did Zheng Xuyao ​​die of Weidu?"

Fang Ze took a deep breath, shook his head and said, "We met a very powerful character."

"Potassium arsenate is slightly toxic."

"Vitamins are not toxic.

"But if the two are mixed, there will be a slow chemical reaction that produces trivalent arsenide."

"These trivalent arsenic compounds are highly toxic."

"The most representative trivalent arsenic compound is arsenic trioxide."

"Do you know what arsenic trioxide does?"

Fang Ze looked at Shen Kai and Luo Bixin.

The two shook their heads, indicating that they did not know at all.

Fang Ze sighed: "Arsenic trioxide is the main component of arsenic."

"what!"

The expressions of the two changed.

Shen Kai said quickly: "Fang team, you mean, the shadow poisoned Zheng Xuyao ​​yesterday."

"He checked very clearly and knew that Zheng Xuyao ​​had the habit of taking vitamins, and the time was around four o'clock."

"In this way, he can make Zheng Xuyao ​​commit suicide by taking poison in disguise without any effort or showing up in the hospital!"

Fang Ze nodded slowly.

Acknowledged, Shen Kai took a deep breath.

This shadow is too scary! It can be said that there is no omission! Before leaving the black card, the murder plan was already prepared.