I don't think that I've read a non-mystery short story by Christie before, but this is certainly one. It's a romance - quite a funny one - in which Parker Pyne is caught up, quite against his will, in a middle-aged mother's attempt to end her son's relationship with a young woman she finds unsuitable. I have to say that, unlike many of Christie's mysteries, I saw the twist here coming a mile off, but that didn't make it any less entertaining.