[s12e18] Hell's Kitchen File

A major focus of this episode is time in prison.

He uses a specialized "blood-letting" kit and keeps victims in a hidden basement cellar. [S12E18] Hell's Kitchen

The Unsub, John Pringle, is a "blood drinker" who suffers from a delusional belief that consuming the blood of young, healthy victims will cure his own terminal illness. A major focus of this episode is time in prison