Through a thorough investigation of the entire building, team members reported that the residents downstairs heard the argument between Yang Kai and me that day.

"The downstairs residents said the victim kept yelling until 10 PM, but according to surveillance footage, Miss Ye left the community at 9:50, which means the victim was still alive when she left," a young police officer responsible for the investigation added.

Later, another person stepped forward, confirming my activities over the past two days, proving that I had indeed stayed at the hotel. The surveillance footage from the hotel and nearby shopping mall clearly captured my face, confirming that I had not secretly returned home during this period. It wasn't until this morning that surveillance footage at the community gate captured my image.

These are solid pieces of evidence, leaving the police with little room for speculation. Ultimately, they released me and left with Yang Kai's body and a pile of evidence collected from the house.

However, that night, Captain Xia came to me again.

Their efficiency was remarkable; within just one day, they had tested some of the evidence brought from the house.

But his gaze made me uncomfortable, filled with apparent scrutiny and examination.

"Miss Ye, in this world, no matter how thorough one is, there will always be a lapse. You might not have thought, besides your and the victim's footprints, we found a third set of footprints in your bedroom."

"That must be the killer's left information!" I exclaimed uncontrollably.

Captain Xia smiled instead, and he countered by asking why I was so sure that the owner of the third set of footprints was the killer.

For what other reason? The bedroom is a private space, and even the owner's friends might not enter.

"So, the problem lies right there."

Captain Xia raised an eyebrow and began analyzing with me.

Based on a previous deduction, the person who could get Yang Kai to drink the sleeping potion without any defense had to be an acquaintance. He said I had suspected that the killer was his mistress, which wasn't without reason. After all, someone who could enter the bedroom must be someone trusted by the homeowner.

But the problem is—

"The third set of footprints belongs to a very obvious male."

Captain Xia stared at me unblinkingly, as if trying to see through me, with eyes full of intimidation.

"So, between you and Yang Kai, who is the one really cheating?"

I was completely stunned. I never thought Captain Xia would make such an assumption. If I were really cheating, why would I argue and cold war with Yang Kai? It would make more sense to cancel the engagement right away than to resort to murder.

In the end, he still suspected that I had something to do with Yang Kai's death!

Thinking of this made me extremely angry.

"Captain Xia, all the evidence has proven my innocence. To suspect me of cheating and even murder based on that set of footprints alone is a bit too much!"

But Captain Xia's expression remained unchanged: "Too much? But what if I say that the plan to kill Yang Kai was executed with the cooperation of you and your secret lover from the very start?"

According to his idea, he speculated that after I left home following an argument with Yang Kai, my affair partner secretly entered and murdered Yang Kai, then staged it as a suicide. I would later reveal this incident.

My testimony would perfectly cover up his existence in front of the police, and the surveillance records cleared me of any suspicion of murder. The entire process was meticulously plotted.

None of us had anticipated that the set of footprints in the bedroom would alert the police to a flaw.

This is what Captain Xia referred to as "no matter how thorough, there will be a lapse."

After hearing his analysis, I felt both furious and amused.

"Captain Xia, believe it or not, I did not have an affair. The unfaithful one in this marriage was Yang Kai. I have never lied!"

Captain Xia frowned: "Then think carefully, is there anyone close to you both whom you've never really paid attention to?"

I fell into silence, pondering his hint for a long while, and finally thought of someone.

"Liu Lei, the neighbor living opposite my house!"