Danny Mastrogiorgio

Gordon and Bullock search for the source of a new street drug storming the streets of Gotham that causes euphoria then death. Meanwhile, Oswald Cobblepot works his way deeper into Maroni's (guest-star DAVID ZAYAS) inner circle and Fish Mooney continues her plot against Falcone.

As a contentious City Council vote on the future of the Arkham District approaches, politicians on both sides are in danger. Gordon and Bullock must race to protect the Council. Meanwhile, an old friend visits Gordon.

As violence between Maroni and Falcone continues to escalate, Penguin reveals a new element of his manipulative strategy, forcing Gordon to deal with the consequences of his decision to spare Penguin's life.

Alicia's professional future hangs in the balance as she decides what's next for her career. Meanwhile, when Alicia gets a suspicious call from a client, she discovers that he's being held in a secret police facility where people are detained without being officially booked.

Rollins and Kat respond to a dangerous domestic violence call while Fin gives his deposition in the lawsuit against him.

Sherlock must take the stand and defend his career after an investigation goes horribly awry, threatening his and Watson's future with the police department.