CSI: NY: Season 6, Episode 19

6 - 19: Redemption

Hawkes goes to a prison to witness the execution of a death row inmate who murdered his sister. Just as it is about to take place, a guard is killed. This is revealed to be a plot by Shane Casey, who is using the murder as a distraction to escape using Danny's stolen badge. In the process, the prison cells are unlocked, resulting in a prison riot.