"Alright. As for this fifth letter, I believe the mastermind behind the scenes is just overdoing it."

Jiang Yuming took a sip of tea and continued his reasoning.

"This whole case seems to be very intriguingly planned. Let me deduce it for you step by step."

"First, let's look at the composition of the first four letters. I don't know if you've noticed, but the victims of these four letters seem to have no obvious external connection with each other."

"An ordinary middle-aged man, a freelance writer, a popular singer, a housewife. Why does the killer want to link these four people together?"

"I investigated the identities of these four victims through some channels and got a rather interesting result. It turns out that the first victim, Zhao Wei, and the fourth victim, Yang Mengting, were actually once married!"

"This result shocked me. However, they divorced thirteen years ago, and their only daughter, Xiaohuan, lives with her mother."

"Why do their names appear in the anonymous letters sent to you, along with a freelance writer and a singer? Only by finding the intrinsic relationship between these four victims can I determine the real intention of the killer writing these letters to you."

"So, have you found the killer's real intention?"

Father took out a cigarette and put it in his mouth.

Jiang Yuming did not directly answer his question but shifted the topic.

"Mr. Zhang, how was your relationship with your ex-wife?"

"This... why do you suddenly ask this?" Father took the cigarette out of his mouth. "My wife ran away, didn't you know?"

"The one who killed Zhao Wei, is you, isn't it?"

Jiang Yuming stared firmly at the person opposite him.

"Ha! What a joke? I only knew about this person after receiving the anonymous letter!"

"Is that really the case? That night, you heard that Miss Zhang met Zhao Wei, then quietly followed him in the middle of the night, finally killed him in some sparsely populated dark place, and disguised it as an attack by a robber."

"No doubt, other than you, the killer could not be anyone else! Otherwise, how could you be so sure that the deceased mentioned in the notice at the community entrance was Zhao Wei himself?"

"Who else but the killer could be so sure that the deceased was Zhao Wei?"

"Then how do you explain these letters?!"

"Those letters, if my reasoning is correct, function no differently than those ubiquitous yellow sticky notes in your home!"

"It's you, who wrote such an anonymous letter to yourself to remind yourself to complete this murder! To reward yourself, you even set the reward for the work you were to complete!"

Jiang Yuming paused and took a sip of tea.

"What nonsense are you talking about?! Why would I kill Zhao Wei? I have no enmity with him, why would I want to kill him? I have no motive for the crime!"

Father lowered his voice.

The roar carried a certain threatening tone.

"Of course you have a motive!"

"You mean to say, I wrote those anonymous letters to myself, then killed them one by one, the freelance writer, the singer, the housewife, all killed by me?"

"Yes, on the surface, it looks like that. You received the anonymous demands and killed them all! And the fifth letter, the victim is yourself, whether it can be seen as suicide out of guilt or for other reasons, in any case, it's a meticulously designed plan!"

Jiang Yuming gestured to the waiter to add more tea.

"Ha! Am I really the serial killer?"

Father put the cigarette back in his lips and lit it with a lighter.