When Casey Cantrell's mother died, her last wish was that her daughter would give a letter to Lord Richard Bredon, living in the UK. When Casey arrives in London, Lord Bredon denies ever having known her mother.

Dismayed that her husband George is ignoring her in favour of his much younger secretary Nancy, Maria Packington answers an advert guaranteeing to make her happier and ends up in Parker Pyne's office. As a result she is introduced to handsome young Claude Luttrell who makes her feel special, and eventually Maria and Claude 'bump into' George and Nancy, as a result of which George that what is sauce for the goose applies to the gander and returns to his wife. Claude lets Maria down gently by saying that he is a gigolo but will reform because of her so that she will always feel special.