The R of the title stands for the young protagonist, Rune, fearlessly played by Pilou Asbæk. Imprisoned for violent assault, he's a cocky, good-looking young man placed in the hardcore ward, where his survival depends on quickly learning the prison's parallel world of rules, honor, and obligations. R also stands for Rachid, a young Muslim prisoner who becomes Rune's friend and accomplice, defying the rigid racial stratifications among the inmates.
Kim Winther....Fængselsbetjent Kim
Jorg Beutnagel....Fængselsbetjent Bjørn
Claus Saric Pedersen....Mini
Søren Thomsen....4. vest
Filmography links and data courtesy of The Internet Movie Database.