Law & Order: Criminal Intent: Season 4, Episode 13

4 - 13: Stress Position

The murder of a corrections officer points the Major Case squad toward a corrupt Brooklyn prison where unaccounted-for prisoners are secretly abused by guards -- and the key to exposing the ring lies with a prison nurse whose boyfriend is the maverick Detective Mike Logan. As Logan warily aids Detectives Goren and Eames in their probe, they discover an unseemly political connection and ultimately must jeopardize their lives inside the forboding walls.