In college, Hart majored in geography and international affairs and did not take any classes that would lead to a career in writing. She was inspired to become a novelist after taking a political job with Response Dynamics, Inc. writing fundraising letters. Because of this, she met many aspiring novelists and decided to try it herself. 
Her political career included working for Senator Strom Thurmond, William Rehnquist confirmation hearings, and working in the White House. 
She is the author of three books in the Left BehindEnd of State spin-off series: End of State,Impeachable Offense, and Necessary Evils. She is also a dramatist who writes, directs, and produces children's musical theatre for churches. She currently resides in Virginia.