A twenty-first birthday is a time for celebration. A time to look forward to the future, to marrying your fiancé. A time to forget that your father was poisoned by your mother, and that she died in prison when you were only five years old. Carla's coming-of-age present is a letter telling her that Mummy was innocent. Desperate to clear her mother's name, she asks Hercule Poirot to go back and interview the original suspects : a stockbroker (who went to market); his brother (who stayed at home); a socialite (who had roast beef); their governess (who had none); and a disfigured young archaeologist (who cried "wee wee wee" all the way home)...
