The Runaway Heir by Janice Broyles
In Ancient Palestine, Michal, a young Israeli princess, marries the man she loves, but it comes with a high price. She must spy on him and report back to her father, the notorious King Saul. Michal hopes her father will forget his animosity toward the giant-killing David, and that she and David can finally live a life of peace together. Unfortunately, her father comes to collect on Michal's promise, and she is forced to choose between betraying her father or her husband. Her decision launches her life on a path she never expected. Michal and David are ripped apart for eight years. One is forced into a loveless second marriage, the other is forced to run for his life. If they can survive the vengeful King Saul, they may have a chance at restoring their love. But a lot can change in eight years, and Michal and David are not the same as they once were.
Book Length: Long Novel - 320-650 Pages