One night in a remote hunting lodge with a Hollywood director causes an international scandal that wrecks Astrid's glittering stage career, and her marriage.
Her ex-husband, the charismatic Scottish actor Magnus Fellowes, goes on to find global fame, while Astrid retreats to a disintegrating Sussex windmill.
Now 82, she lives there still, with a troupe of dachshunds and her long-suffering friend, Mrs Baker, who came to clean twenty years ago and never left. But the past is catching up with them. There has been an 'Awful Incident' at the windmill; the women are in shock.
Then Astrid hears that Magnus, now on his death bed, is writing a tell-all memoir. Outraged, she sets off for Scotland, determined to stop him.