I watched documentaries about Bratva and how they operate in Russian prisons…
Everyone on staff watched Eastern Promises.
We’re dealing with the Bratva, and the Bratva is, as we all know, a pretty interesting and messed-up institution.
In addition to several documentaries, they also watched the David Cronenberg film Eastern Promises, which helped teach them how to properly depict the vicious nature of how real life Russian gangs operate — particularly in a prison environment.