Starred Up (2013) online

Eric Love (O'Connell) is a 19 year old teenager who is so violent he has been 'Starred Up' (Moved to Adult prison) where he finds his father Neville (Mendelsohn) who Eric hasn't seen since he was 5 (since he was put into care). Neville tries to get Eric to settle down, so Eric gets a chance to go through therapy with Oliver (Friend).