It's a movie involving the Russian mafia, essentially- which is supposed to be where Ivan got his ink in prison. It's got Viggo Mortensen in it- I haven't seen it, I've read the TV Tropes article, it sounds interesting. http://tvtropes.org/pmwiki/pmwiki.php/Main/EasternPromises

Love the movie, but when it comes to fic notions, it's all 'data data data, I cannot make bricks without clay!' in my head.