Hold me tight

Mallory and Isaac Fridman have been gloriously, happily married for over 30 years. Isaac works away a lot, and when his daily love letter arrives, as it has done from the moment he met her, Mallory loves to read out the most beautiful parts to her friend, Rosie. Which was fine when Isaac was alive, but now he's dead, and the letters are still coming, and that makes life very complicated indeed. When Rosie sees Mallory with a well-dressed man, catches a glimpse of her beautiful new necklace and notices something curious about the letters, things threaten to become more awkward still.