"The Christmas Carol" was written by Charles Dickens in 1843 and set in Victorian England. It tells the story of Ebenezer Scrooge, a bitter old man who is visited by three ghosts on Christmas Eve. Through their guidance, Scrooge learns the true meaning of Christmas and resolves to change his ways. The book is considered a classic Christmas story and has been adapted into numerous stage plays, films, and TV shows. It's a heartwarming tale of redemption and the spirit of Christmas.