What is the fine-grained topic of the following text: At the end of last season, following an assassination attempt on her life, President Keane (Marvel) broke her promise to Carrie (Danes) by arresting 200 members of the intelligence community without bringing charges against them, including Saul Berenson (Patinkin). Only return the topic.
Assassination attempt on President Keane and subsequent arrest of intelligence community members in a TV show.