A Christmas Carol was a story written by Charles Dickens. It depicted the haunting of a miserly character named Ebenezer Scrooge by four spirits, who were determined to teach him the meaning of Christmas, so he might regain his holiday spirit.
Data employed a holonovel of the story in 2367 to study "method acting". He attempted to discover emotions of his own by recreating them in performance through this technique. Data noted the way fear was used to motivate the evil Scrooge to redeem himself. (TNG: "Devil's Due")
In 2371, Tom Paris related to Harry Kim that the reason he confessed and lost his commission and was sent to prison was "those three dead officers came to me in the middle of the night and taught me the true meaning of Christmas". (VOY: "Caretaker")