Paul Mendelson's canny, gentle comedy, about a woman up against religious tradition, was first heard on Radio 4 in the Nineties. It wears well. It could, almost, be about a woman vicar in a traditional parish or a nun who knows (as one or two sisters I have met know) that one of these days there won't be enough men to be priests. Tracy-Ann Oberman plays the new rabbi ministering to a Reform Jewish congregation who gets to know and like (and the liking is mutual) the orthodox rabbi and his wife in the neighbouring synagogue. First episode of four.