When a marriage has been jogging along comfortably for a few years, it does sometimes happen that one partner -usually the husband -becomes restless, and might get interested in someone else, and the couple go through a bad patch. But in the case of Catherine and Jason Clyde, married happily for eight years and with two children, it was Catherine who found herself becoming more and more unsettled. But was the right answer necessarily for her to go back to work - when this involved getting far too friendly with Russel Thurston?