Karanlık Şehir Hikayeleri: Kilit

One morning in a highly secured prison, 10 prisoners are found dead mysteriously. Erol, Chief of Homicide Bureau, and Selin, Intelligence Officer are tasked with investigating the murders. The only lead they have is the fact that these prisoners are convicted with the same felony for a second time. According to their autopsy reports the cause of death for each case is the same: heart attack. But the truth is utterly different from that. (Cinedex)