“It girl” Serena van der Woodsen has returned to Manhattan after a mysterious and self-imposed exile to boarding school. Serena’s best friend, Blair Waldorf, has conflicted feelings about her friend’s…

Danny, Erin and Frank work together to seek justice when the main suspect in a rape case is protected by diplomatic immunity.

After discovering his criminal empire is under attack, Red turns to the task force for help, leading the team to hunt an assassin who kills her victims by infecting them…