When the two grown daughters of Elizabeth Marshall discover an old diary of their mother's in her attic, it comes as a shock to learn that the true love of Elizabeth's life was not their father. But is all as it seems? That's the mystery the two daughters must unravel as they stay up late reading the words penned by Elizabeth so long ago. Their mother can't give them answers; after a massive stroke, she lies mute and near death in a nursing home. Only the pages of her diary can provide clues to what really happened. Did Elizabeth marry their father, Bob, out of a sense of obligation rather than love? What happened to the mysterious "A.J." and who ignited Elizabeth's passions as a young woman in the small town of Emory, Nebraska? In a richly detailed journey into the past, we see Elizabeth lose her heart to one man while remaining devoted to another. The Diary is a love story. It's also the story of the unshakable bond between a mother and her daughters. Elizabeth's daughters are forced to ask the question that all adult children must ask themselves at some point. How well do you really know your parents?