The third installment in the Mark of the Lion trilogy.

Following A Voice in the Wind and... An Echo in the Darkness, As Sure as the Dawn continues the chronicles of Hadassah, a Christian slave woman living during the height of the Roman Empire. She has saved the life of the scorned child of a disreputable Roman woman and the Germanic gladiator, Atretes. For her faith, Hadassah now languishes in condemnation, awaiting death in a dungeon beneath the arena. Atretes, who holds fast to his dreams of revenge for the slaughter of his people, wants his son back. So he seeks out John the Beloved, who is the key to finding the custodian of his son, and brings his war-weary soul closer to redemption.