When NPR's Scott Simon began tweeting from his mother's hospital room in July 2013, he didn't know that his missives would soon spread well beyond his 1.2 million Twitter followers. Squeezing the magnitude of his final days with her into 140-character updates, Simon's evocative and moving meditations spread virally. Over the course of a few days, Simon chronicled his mother's death and reminisced about her life, revealing her humor and strength, and celebrating familial love.

UNFORGETTABLE expands on those famous tweets to create a memoir that is rich, deeply affecting, heart-wrenching, and exhilarating. His mother was a glamorous woman of the Mad Men-era; she worked in nightclubs, modeled, dated mobsters and movie stars, and was a brave single parent to young Scott Simon. Spending their last days together in a hospital ICU, mother and son reflect on their lifetime's worth of memories, recounting stories laced with humor and exemplifying resilience.

UNFORGETTABLE is not only one man's moving celebration of his mother's colorful life,