Why is it that every attempt to film Richmal Crompton's William stories comes a cropper? My guess is that the high quality of the illustrations by Thomas Henry leads to expectations that no boy actor can fulfil. Daniel Roche is the latest juvenile to attempt the role. He is too chubby and his scowl comes across as petulance. He looks more like Hubert Lane than William Brown. The BBC production values for its new series are good; Rebecca Front as the long-suffering Mrs Brown is excellent and Martin Jarvis's narration inspired as usual; but where is that memorable imp which Thomas Henry drew so well? See if you can find him. The next episode is on BBC One at 12:50 tomorrow. Click the title link to read more about Thomas Henry.