Shelagh Delaney is a natural playwright if ever there was one. She is able to give the audience—or this member of it, at any rate—not only a sense of the diversity of the life she depicts but a feeling of being part of it. The characters in "The Lion in Love" … are all working-class people in a small town in the North of England, and through the small incidents of their daily existence runs a story about a man and wife whose marriage is in pieces and who live with their grown son and almost grown daughter in a cottage belonging to the wife's father. The husband, Frank, is a peddler of toys. The son is about to emigrate, and the daughter is about to marry a young Scot and go with him to London. The wife, Kit, is a natural disturber of the peace, but...