Everything begins with the affair between John Proctor and Abigail Williams, the niece of Mr. Perris. John Proctors affair to Abigail created an hateful relationship between Elizabeth Proctor and Abigail Williams. Both of them wanted John Proctor for them self. Fact is when John Proctor had not
have an affair to Abigail, Elizabeth possibly never had someone against her in the court. This mistake made the hole story of the Proctors.
Elizabeth knowed before Proctor told her that he had an affair with Abigail, that they did. But she was still shocked of it that she was right. That made her thinking about what happened between them and what she did false. On that evening he told her that he wanted to start on a other trip and be there for Elizabeth. But than Elizabeth got confessed to be a witch and was brought in jail. From that moment John Proctor knowed, that he have to help her what ever will happen to him. He got the information, that Abigail gave the court lies about Elizabeth to get her in jail.
At the end, he confessed to have an pact with the devil to get his wife, Elizabeth out of jail and to end all the witch trial in Salem. That finished the witch searching and the confession of innocent people and with it the fight between Abigail and Elizabeth. That was his Bill, John Proctor had to pay at the end. He saw no other way to help his wife out of that.
That learn you, Never lie and don't hurt others, because you will get everything back you do. If it is good or bad. Your choice!