Amy Page is a middle-aged widow, authoring a cookbook and staying in Paris for a good length of time. She has rented a flat and is enchanted with Ile St-Louis. The mystery begins as she returns to her apartment and finds that a taxi driver has been murdered right outside her door. Jean-Michel Jolivet, an inspector with the French Police, asks her questions over a period of hours. This is the beginning of an interesting relationship and the unraveling of a mystery much bigger than the murder of one man.

As the case evolves it seems that Amy is much more involved than a simple witness, and even more than she ever realized. And as time goes on she and Jean-Michel become more involved than either of them intended. The plot thickens as the pages turn and readers will find they stay up late to find out what happens next.