Jim investigates the death of a witness inside the station house, and quickly realizes that it's an inside job. When no one on the force can help him, he turns to Oswald for help. Meanwhile, Oswald shows his mother his new club, and Bruce returns from Switzerland and seeks out Selina.moreless
Kevin interrrupts Jackie and Frank's date night. Gloria's blood test gives the answer to her recent memory issues. Zoey helps Ike organize his office. Jackie gets angry with Grace when she finds out she left campus for lunch. Frank asks Jackie to deal with her problems.moreless
The hunt is on after Sebastian Moran a.k.a. M reveals to Sherlock that a man dead from an apparent heart attack was actually a victim of Moriarty.
Lazarus tries to locate the person who helped him save a boy from a fire. Tonya and Ahmad go undercover. Kenny and Jackpot find themselves cornered by an alligator.
Danny and Jackie discover a leak in the NYPD after an attempt is made on their witness in protective custody. Erin has a chance to work with Frank when she's offered the job as deputy mayor.moreless
Alicia's case is in jeopardy when her key witness kills himself. Meanwhile, Eli helps Peter.
When the Machine turns up a deceased individual as a Number, Finch must remember how he came to create the Machine and determine how the apparent error could have occurred.