Jessica Farrell, a successful young architect living in London, has used her career to put her romantic past - and guilt about her parents' deaths - behind her. But then a mysterious note arrives, and she is reluctantly drawn into intrigue, adventure, and the arms of Edward Drummond, her former lover. To rescue Edward's kidnapped child they must solve the puzzle inscribed within Jessica's ring - a puzzle created by Edward's late uncle as the ultimate snare for the diamond mining industrialist who ruined his life. But the trap has also caught Jessica, who finds herself forced to face her...