15. After Agatha Christie's death on 12th January 1976, it seemed that the truth may have finally emerged. Why did she really disappear?
From Quiz The Mysterious Case of the Missing Novelist
Answer:
To spite her husband and spoil his weekend
Having been told by Archie that he was in love with a younger woman and wanted a divorce, Agatha staged her disappearance with the help of her sister-in-law, Nan, maybe in the hope of persuading him to stay with her. Unfortunately the prank back-fired when the letter she sent to Campbell, in order to ensure that she would be found quickly, was mislaid by him before he had read it properly. She had not anticipated the intense media coverage, and hated the publicity she had unwittingly courted, having no desire to publicly admit that her seemingly idyllic life was not as it seemed, and her husband's infidelity was in fact the cause of her disappearance. The incident did not help her relationship with Archie either, and two years later they were divorced. He married Nancy Neele and Agatha, some years later, met and married archaeologist Max Mallowan, fourteen years her junior.