Why does Jenna become suspicious about Dr. Mellace's death? What characteristics does she have that compel her to find out more about it?

Who are the mysterious "agents" who are trying to keep a lid on the investigation of the deaths of the old scientists? What are their backgrounds? Who do they report to?

Why were most people with whom Jenna discussed the possible subversive plot skeptical? What image does the term "conspiracy theory" engender and why?

Why was there tension between Jenna and Yoshiko? Why did Yoshiko feel the way she did about the vacation? Why did Jenna ignore Yoshiko's urging to leave the investigation alone?

Why were the girls upset when the two vicious murderers who were pursuing them were shot to death by the FBI? Would it have been better to let the men live? Why?

What evidence is there that...