The Mark of the Lion series is authored by Francine Rivers and consists of three novels: A Voice in the Wind (1993), An Echo in the Darkness (1994), and As Sure as the Dawn.
The novel follows the lives of Hadassah, a young Jewish girl captured when the Romans destroyed Jerusalem and is sold into slavery yet still holds firm to her faith in God; Marcus, a wealthy Roman aristocrat determined to get the most out of life; Julia, Marcus' younger sister, a high-spirited girl who desires to be happy and control her own life who is served by Hadassah; and Atretes, the high chief of a Germanic tribe who is captured and sold to be a gladiator.
Throughout the book, readers receive a glimpse of the extreme faith and love Hadassah has for her God, and the way it impacts the people she meets.
As Sure as the Dawn (1995) is rather a split of A Voice in the Wind than a follow-up of An Echo in the Darkness following the life of Atretes after he won his freedom in the arena.
This novel covers the search for his believed dead son, finding him with a widowed Christian woman, Rizpah, and their travels back to Atretes' homeland in Germania.