CSI NY: Four Walls

Detectives Mac Taylor, Danny Messer, Sheldon Hawkes and Don Flack are called in to investigate a double-homicide at a medium security facility on Staten Island. The prison has been witness to a lot of racially-motivated tensions and it appears that things have finally boiled over in a lethal fashion. One of the murders seems to be an open-and-shut case -- a prisoner gets a shiv in his ribs and eve...