Starman Plays The Pandora Directive (Lombard Street) - Part 7

In which The Black Arrow Killer (or his copycat) has been stopped, but we still have more questions than answers. What did Dag Horton steal that was worth killing over? Why is the NSA involved in this case? Who is the mysterious woman who saved us from the police? Where can we find Thomas Malloy? And why am I asking you?