In Nancy Drew®: The Silent Spy, discover what really happened to Nancy's mother. Nearly a decade ago Agent Kate Drew left home to neutralize a biochemical weapon in Scotland. While her assignment was a success, Kate died in a car accident. Or, so we were told. Now the echoes of a similar plot reverberate and it's up to you, as detective Nancy Drew, to thwart the sleeper cell and expose the truth about your mother's tragic demise. Start your investigation today in Nancy Drew®: The Silent Spy!