NPR's Scott Simon wrote a memoir called "Unforgettable" about spending his mother's final days with her in the ICU after tweeting about the experience. The tweets spread widely beyond his 1.2 million followers. In the book, he expands on those tweets to provide a rich and moving tribute to his remarkable mother, chronicling her colorful life working in nightclubs and as a single parent, as well as their lifetime of memories. "Unforgettable" celebrates the universal bond between mother and child and the lessons of grace Simon learned from his mother during their last days together.