Nancy's Last Dance is an original yarn seen in Sin City: A Dame To Kill For.
Set four years after "That Yellow Bastard", Nancy Callahan struggles to cope with John Hartigan's selfless suicide. Drinking heavily, she has become obsessed with vengeance on Senator Roark, who drove Hartigan to kill himself. As she wallows in despair, the ghost of Hartigan (Bruce Willis) watches over her, unable to reach her but attempting to help. On the same night Johnny joins the backroom poker game, Nancy attempts to shoot Roark from the stage of Kadie's, but finds herself unable to pull the trigger, possibly due to Hartigan's ghostly influence.
Nancy hallucinates a visit from Roark, and shortly thereafter cuts her hair and smashes a mirror, using its shards to cut her face. Having witnessed Nancy's downward spiral, Marv steps in and volunteers to help her kill Roark. They are attacked by a motorcycle gang, which Marv kills, but he leaves their leader for Nancy to finish off. The pair mount an assault on Roark's compound, and Marv brutally slaughters Roark's bodyguards while Nancy picks off the guards with a crossbow. Marv is wounded, and Nancy continues on to confront Roark by herself. Roark shoots her several times and is about to finish her off when he is distracted by the ghost of Hartigan appearing in a mirror, which gives Nancy enough time to recover and shoot him dead.
- Formerly known as "The Fat Loss".