ER: Season 12 Episode 22: 21 Guns
Starring: Noah Wyle, Laura Innes, Mekhi Phifer, Sherry Stringfield, Parminder Nagra, Linda Cardellini, Shane West, Scott Grimes
Length: 45 minutes
On Air Date: 18 May 2006
ER: S12E22 Description: Chaos reigns in the ER when two prisoners are brought in for treatment, but instead plot a violent escape. Their desperate actions place one doctor in harm’s way, and forces one nurse to become a tool in their plan.