The Mark of the Lion Trilogy is an urban fiction Christian novel series written by Francine Rivers. Set in ancient Rome, the series follows the lives of several characters, including a young Christian slave named Hadassah. The novels explore themes of faith, persecution, and the power of God's love in the face of adversity. With its rich historical detail and compelling characters, The Mark of the Lion Trilogy has become a favorite among readers who enjoy urban fiction with a Christian perspective.