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 tragic 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. Learn about Nancy's mother and what really transpired during her final days. Expose dead drops and black operations by gathering intelligence and new leads. Characters will change their motives as your investigation unfolds. Solve the most personal Nancy Drew Mystery adventure!