In Acapulco, Hercule Poirot attends a dinner party in which one of the guests clutches his throat and suddenly dies. The causes seem to be natural until another party with most of the same guests produces another corpse.

Héctor and María meet again after eight years of not seeing each other. She works as a magician in cabarets and he robs houses. María convinces Héctor to become a magician and work together. Life seems to smile on them until one day, when Maria travels to another city, the couple's situation will be overshadowed by an unfortunate event.

One woman lives waiting for her son who is a sailor. She hasn't seen him for years although he writes to her a lot. The woman shares the letters and her grief with a co-worker and friend. This last woman begins to idealize her friend's son.

When a man appears in her life, a young woman of traditional manners who lives with her godmother suffers a deep and unusual transformation.

The divorced university professor, Victoria, signs a letter of protest for the political disappeared that her students request, although she is not interested in politics. That afternoon his daughter, a twenty-year-old medical student, disappears. This event will change the vision of Victoria and her participation together with relatives of other political disappeared to obtain justice.