Brad Fleischer

As the riot continues to rage inside the prison, Michael risks everything to rescue Sara, and the assassin tries to kill Lincoln. Meanwhile, Veronica and Nick fly to Washington to trace the tipster's phone call.

Danny investigates when an ex-NYPD officer goes missing after she revealed she wished to make amends to a woman she wrongfully convicted.

Michael's ploy to buy some work time by prompting a cellblock lockdown leads to a full-scale riot, Nick convinces Veronica that he really does want to help her, and Kellerman hires an inmate to kill Lincoln.

Emmy-winning Edie Falco returns as drug-addicted nurse Jackie in the fourth series of the comedy drama.

Things get even more personal for Jack when he learns of a devastating development. Meanwhile, trouble looms for President Taylor and her landmark peace agreement.