Why did Agatha divorce her first husband?

Reasons Behind the Divorce

Dame Agatha Christie, the famous mystery novelist, was married to her first husband in 1914, but their union ended in divorce in 1928. The couple separated in 1927 following a significant disagreement prompted by his unfaithfulness, and they finalized their divorce the next year. During this tumultuous period, Agatha produced some of her most acclaimed detective novels.