In 'Monogamy,' bestselling author Sue Miller captures the heart-wrenching aftermath of a cherished relationship torn apart by death and betrayal. Annie and Graham, married for nearly three decades and admired by all for their deep connection, navigate through life's intricacies and creative aspirations in Cambridge. Graham, a vibrant bookseller, and Annie, a reflective photographer, seem to personify the perfect couple. With adult children pursuing distant lives and Graham's first wife remaining part of their extended family, their life is full of complexities hiding just beneath the surface. The sudden demise of Graham unravels Annie's world, forcing her to confront painful realities and shattering the idyllic vision she had of their life together. As Annie delves into the shadows of grief and deception, she must question her understanding of love, fidelity, and the essence of knowing another person.