At the beginning of The Pillowman Katurian finds out that his brother, Michal, has been tortured by his parents at night for over seven years. Katurian then smothered his parents with a pillow in retaliation for the pain and suffering Michal had to go through. From then on, he started to take care of his brother.
Michal then confronts Katurian about the killings, and admits that he reenacted the stories that Katurian wrote and carried them out on other children. Michal then blames what he’s done on Katurian, claiming that Katurian told him to do so when he read out the stories to him. Katurian then smothers Michal, to not have to be executed for the crimes he committed and decides to take the blame – on the condition that they save his stories.
What I find interesting about this particular part of the play is that Katurian has a lot of compassion for Michal. What he did to his parents and to Michal was horrible, but he did it for Michal. He made his parents pay for how they abused Michal and how it ruined his childhood, because he loved his brother. He smothered Michal because he didn’t want him to go through the pain of being executed – and this, to me, shows that he would do anything to not get his brother in trouble or in anymore pain.