A Christmas Carol is a classic comedy drama book written by Charles Dickens. It tells the story of Ebenezer Scrooge, a grumpy and selfish man who is visited by three ghosts on Christmas Eve. Through these encounters, Scrooge is forced to confront his past, present, and future, leading to a transformation that teaches him the importance of kindness, generosity, and the spirit of Christmas. This timeless tale is filled with memorable characters, vivid descriptions of Victorian London, and a powerful message about redemption and the power of love.