As Fisk moves into swanky new digs amid a public outcry, Matt wrestles with how far he's ready to go to right this wrong. Dex's aim comes into focus.

Driven to the edge, Dex loses his way until he's offered a lifeline by Fisk. Matt comes to Karen for help, which she agrees to give -- on one condition.

Matt's already shaky world tilts when he learns a shocking truth. Karen runs for her life. Nadeem discovers how deep Fisk's influence runs.

In the season finale, Matt prepares to cross the line, as Dex becomes more dangerous than ever and Fisk enacts his endgame.