Supergirl realizes that in order to stop Lex and Leviathan she must work with the one person she never thought she’d trust again – Lena. Nia keeps dreaming about Brainy…

Supergirl and the team go head to head against Rama Khan and Leviathan. Meanwhile, Lena and Lex must join forces when Project Non Nocere fails, leaving the two siblings in…

When a package mistakenly shows up on Miles’ doorstep, his search for its importance leads him to a couple grieving the loss of their daughter. Also, Miles, Cara and Rakesh…

The detectives investigate a slain bank robber and check out his sister, who is involved with a bogus United Nations economist. As the detectives close in on the suspect, Goren…

When a man is found dead in an industrial cake mixer, Castle and Beckett trace the murder to an Irish gang in Staten Island and a beautiful bar owner named…

Benson and Stabler investigate a tutor after a student is beaten and sexually assaulted, but their investigation soon leads them to another student.

Don and Peggy are faced with life-altering decisions

Sterling Cooper Draper Price employees resort to scuttlebutt after an agency wide meeting is called.

In the midst of a crisis, Don runs into an old friend.

An unannounced visitor at the Francis home rattles Betty.

Peggy is forced to face some unpleasant facts about a client’s discriminatory business practices. Don and Faye’s burgeoning relationship is tested when Sally runs away from home and turns up…

Joan and Peggy deal with high-jinx in the office.

Peggy clashes with her new creative partner; Don pitches under unusual circumstances.

An edict from Roger and Lane puts Pete in a personal dilemma.

Don and Pete disregard Roger’s plans in order to land a new client.

The agency’s Christmas party is nearly spoiled by the late arrival of a surprise and not-so-welcome visitor.

Tony attempts to repair the rift between New Jersey and New York. A.J.’s depression struggle continues. A New York associate crosses the line with Meadow.

Phil Leotardo seeks to continue a cycle of retaliation between the New York and Jersey families. Christopher wrestles with his addictions. Tony decides keeping Carmela occupied with the spec house…

A routine trip to New York turns perilous when ex-operative Tom Keen is recruited by a mercenary chief to help rescue a kidnapped CIA agent.

Holmes and Watson consult on a case in which a man suspected of murdering his wife years ago receives a ransom demand for her safe return. Meanwhile, Lestrade overstays his…

Reese and Fusco get caught in the war between the two newest POIs, rival crime bosses Elias and Dominic. Also, a tantalizing clue to Shaw’s whereabouts leads Finch and Root…

Reese and Finch scramble to protect a software CEO when his behavior becomes increasingly erratic following a hacker attack that reveals all his secrets and unravels his life.

Samaritan launches a cyber-attack on the stock exchange, forcing the team to risk their lives in a desperate mission to stop a global economic catastrophe.

Samaritan shows its power by erasing crime from the city for a day in an attempt to force The Machine out of hiding.

Reese volunteers as an NYPD police academy instructor in order to keep an eye on a talented young officer whose suspicious actions make him question her motives. Meanwhile, Martine –…

Reese must save Elias from the Brotherhood. He can’t get any help from Root or Shaw since Shaw’s cover is blown and Root is escorting her to underground.

While Reese is forced to go to counseling for his violent tendencies, Root, Shaw and Finch try to help a new POI.

Forced to take on new identities provided by Root, the team members try to adapt to their new lives. However, some find it hard to ignore The Machine’s numbers, which…