Philip Barnes, the popular vicar of St John's church in a small West Country town, is very happily married: he and his wife Ruth have a solid relationship based on deep love and a shared commitment to family and to faith. So when he finds himself strongly attracted to his daughter's piano teacher, Louise, his feelings are both stimulating and shocking. Their brief affair has tragic consequences for everyone involved, but once Philip realises Ruth has forgiven him, he can begin to forgive himself.