Sin City: A Dame to Kill For (2014)

Plot hole: Towards the end of the "The Hard Goodbye" segment from the first film after Marv has killed Cardinal Roark, a newspaper clipping shows that the Cardinal's brother Senator Roark was decrying the atrocity. However, at the very end of this movie, Nancy kills Senator Roark with Marv's assistance. Since Marv was captured and imprisoned immediately after he killed Cardinal Roark, that means that the killing of Senator Roark had to have occurred before "The Hard Goodbye", which means Senator Roark should not have been alive to decry his own brother's murder.

Phaneron

Dwight McCarthy: Nobody's killing anybody. Not while I'm around.

Trivia: A third film was planned during production, which would have mostly been based upon the comic storyline known as "Hell and Back." But due to "A Dame to Kill For" bombing at the box office, the third film has been placed on hold indefinitely. Series creator and film co-director Frank Miller has said he would still like to make the third film eventually, however.