My story begins with a very small puddle on the kitchen floor. As it was nowhere near the sink, I blamed Biggles, the border terrier, but ‘you know my methods, Watson. Apply them’. And having applied them, I saw at once that the small dog could not be to blame, because he is reliably house-trained and had been bumbling about in the garden for the previous half hour, lifting his leg hither and thither. So I mopped it up and forgot about it. Then, that same afternoon, another........

© The Spectator