Well, folks, the time has come to say goodbye to Orphan Black‘s second season. Before the finale airs tonight, check out the stills and come sneak peeks!

Last week, on ‘Orphan Black’

Last week, Donnie and Alison managed to put away Leekie’s body while simultaneously warning Angela the cop to stay away from them, and scaring the crap out of Vic. Cosima’s chances have gotten far better, now that Sarah let Delphine and her team get her bone marrow in order to save her, but things aren’t looking good for Kira. While she was recovering from the bone marrow procedure, Rachel snuck her way into the hospital dressed as Sarah and managed to kidnap her and take her to the DYAD.

This week, things will get more intense.

The synopsis for this week’s episode reads:

The war with Dyad is all but lost when Rachel’s latest ploy forces a broken Sarah to concede. The Clone Club springs into action, uniting in a reckless gambit to save Sarah. As they fight to gain their freedom, Sarah encounters a new ally and uncovers a terrifying new dimension to the conspiracy.

In addition to the synopsis, and the stills below, you can head over to Buzzfeed to check out the episode’s opening minutes. The sequence goes back and forth between Sarah being in custody and what her, Mrs. S. and Felix were doing after they realized Kira has been taken.

Not much is revealed by the stills, but we suspect that Miriam’s role is going to be more important than ever before, and we’re excited to see what she has in store for our favorite clones.

Check out more ‘Orphan Black’

When “Things Which Have Never Yet Been Done” airs this Saturday on BBC America, be sure to keep an eye out for the new episode of Orphan Black Chat, a podcast brought to you by the writers at Hypable! New episodes can be found on iTunes as well as their Tumblr.