Here's my take on the book if you want to have a look-see. I also shared the character posters here.
Child44/Enfant 44 stars Tom Hardy, Gary Oldman, and Noomi Rapace. Funny when you think about it; Hardy and Oldman both Brits, and Rapace, a Swede, playing Russians during the Stalin era Soviet Union of the 1950's. But here they are speaking French. I get such a kick out of seeing these English-language films dubbed into French, it's an art form in itself and the actors lucky enough to do the voice work for some stars earn some big fat paychecks. That's how it is for Kelly Marot who has a nice long career ahead of her dubbing for Jennifer Lawrence.
You can read my post The Hunger Games starring Kelly Marot for the lowdown on dubbing.