"The Lost Ambassador; Or, The Search For The Missing Delora" by E. Phillips Oppenheim is a novel written during the early 20th century. The story centers around a character who is in Paris on a mission to find a man named Delora, leading him into various social circles and encounters that hint at intrigue and danger, particularly in locales filled with suspense and layered relationships. At the start of the book, the main character is leaving the Opera House and finds himself drawn back to the lively throng outside, where he becomes enthralled by a striking man and young woman. The unfolding narrative introduces Louis, a maitre d'hôtel, who becomes an unexpected companion. Amidst conversations about Parisian life and mysterious undertones of the characters they observe, it becomes clear that the protagonist's search for Delora is fraught with challenges, and hints of deeper narratives begin to surface. As the opening chapter progresses, the stakes increase, hinting that wandering through the vibrant streets of Paris envelopes him within a web of complex relationships, potential threats, and a growing sense of adventure. (This is an automatically generated summary.)