What do you know about prosecution witnesses?

I feel wonderful when I see the front, and I want to play five stars. But there are still some doubts at the end, so I played four stars. the first doubt is that when the defendant saw the lawyer for the first time, he said with a relaxed face that he didn't think he would be arrested. His wife thought he might be arrested and suggested that he find a lawyer, so he came. At the end of the defendant's wife's letter, the wife wrote to her lover that she intended to perjure herself to prove the defendant's guilt, so as to be free and stay with her lover forever. Isn't that contradictory? If the wife wants the defendant to be arrested, she should let him be arrested without doing anything. Why did she persuade him to find a defense lawyer, who is also known as the "king of the dead"? Isn't it obvious that you don't want him arrested? If lawyers notice this contradiction, they should realize that there is something wrong with the defendant's wife's accusation and testimony. The second doubt, according to the plot design, the deceased died after 9: 3. If the defendant did come home at 9: 25, it would mean innocence. If you go home at 1, you tend to be guilty. If the defendant's wife comes home briefly at 9: 25, it may be regarded as invalid testimony because she is a relative. After learning about this, the wife claimed that her husband came home at 1, and there was blood on his clothes, saying that he wanted to kill someone. Later, the design agency overturned all his testimony. People believe that the wife cheated on her husband, so the husband didn't come home at 1+.