Ruth Bryan

Upon his father’s death Jules Beaubien's is left a rich man but also one with a mission. Find his until now unknown half-sister, take her in and educate her. After investigating he discovers she has met a tragic fate after falling for a roue who had abandoned her. Swearing vengeance, he set off in a quest for justice in her name.

Christabel Nuneham (Gladys Hanson) feels neglected by her husband, Phil (Ferdinand Tidmarsh), so she has an affair with Rex Allen (Jack Standing). When Allen has to go to India, Christabel follows him to Southampton to see him off. She is injured in a car accident and is rescued by an evangelist (George Soule Spencer) whose specialty is saving sinners.

The world's finest ruby was stolen from the bride of Prince Kassim's great-grandfather several generations ago in India by a marauding rajah. It's now several decades later and the British have conquered India, and one day the ruby shows up for sale by a wealthy London jeweler, Sir John Garnett. Garnett has his own problems--there have been a rash of thefts of his wife's jewels, and he hires a private detective named James Brett to investigate.