Based on George Higgins’ book The Casino Robbery. In the novel, speech is the main characteristic of the character, it reveals completely his essence. The trouble is that they are all the same, mostly stupid and brought up by prison life. It's all gang romance.
That's almost not in the movie. It's just a story. So as I started watching the movie and knew about the book, I wondered how the characters’ dialogues would be brought to the screen. But the filmmakers, to put it mildly, omitted these merits of the book. You don’t get as much pleasure from a movie as you do from a book. Although I can't say he failed. Unlike the book, it is not a masterpiece.