The other Karen

KIRKUS REVIEW Comfy, feet-up romantic suspense in two postcard settingsrural Maine and wicked old Manhattan. Orphan Catherine Mayhew is barely surviving in the Big Apple, as a walk-on actress, when she answers a mysterious ad promising an out-of-town engagement and plenty of money. The catch? An old one. Catherine, you see, is a dead ringer for Karen, the long-disappeared granddaughter of elderly, ill Josephine Andexterwhose niece and nephew, artists Eunice and Brian, hire Catherine to impersonate Karen. . .just to make the old lady's last months happy. Hmmm. So ""Karen"" arrives at Pinehav…