Dead Letters by Caite Dolan-Leach

Twins are joined much closer than other siblings so when one twin is presumed dead the other may ask questions. Ava left home to run away to Paris and in doing so, left her twin Zoe to deal with their mom's dementia and the family vineyard in New York. After hearing of her twin's death, Ava returns to the family compound only to receive cryptic messages from her dead sister leading her on a wild goose chase to find her. Ava has left behind the pain of New York but now must confront it and find out if Zoe is really alive and if so, why put on this elaborate show. We follow the clues a - z until the conclusion where you really find out how much you know about your other half. Good brisk pace and although we don't always get a clear picture of the family dynamic, there is still a good mystery going on.