The Night’s Watch attempts to defend Castle Black against Mance Rayder’s massive wildling army, who plan to siege the fortress from the north, while a secret garrison of wildlings, including Ygritte, are poised to launch a surprise attack from the south.

A new player in the clone conspiracy turns up at Felix’s door, sending him into crisis mode. With Cosima running out of options, Sarah struggles with the decision to surrender a crucial piece of leverage and make a deal with Dyad.

Piper’s world is turned upside down when she is forced to confront the consequences of her actions and face new challenges.

A bathroom turf war sees deeper lines drawn in the sand as Gloria and Vee go head to head. Piper receives devastating news.

Several futures hang in the balance as the inmates face and confront their worst nightmares: Life will never be the same again.

Tensions run high as a prison power outage forces several issues to come to light; Piper finds herself compromised and is forced to think on her feet.

Piper is shocked at an unexpected change in her status; Soso’s hunger strike attracts new support that takes on a religious fervor.

The guards get tougher in a bid to turn up prison contraband; a big, lingering secret is finally revealed.

Piper’s relationship with Larry faces a real-world test; Red’s effort to redeem herself is finally rewarded. A familiar figure returns to Litchfield.

Sophia gives the women a much-needed lesson in female anatomy; Morello takes a detour; Larry makes some life changes.