In the aftermath of Shirley's death, Suzaku investigates Shirley's supposed suicide and comes to the conclusion that Lelouch murdered her. He decides to question Kallen about Zero's true identity, threatening to use Refrain if she does not cooperate. In the end, Suzaku does not use the Refrain, realizing that by doing so he would be no better than Lelouch. Frustrated, he goes to confront Lelouch personally and discovers that the Intelligence Agency is under the effect of Geass, confirming that Lelouch has regained his memories.