Orphan Black's second season kicked off with Sarah Manning (Tatiana Maslany) frantically searching for her missing daughter, Kira (Skyler Wexler), and the June 21 finale starts in a very familiar place as the lil' girl is, once again, MIA.

Only this time, Sarah knows exactly who's kidnapped Kira — the painfully lonely and barren pro-clone Rachel (Maslany) — and sacrifices herself for the sake of her daughter.

As seen in BuzzFeed's exclusive look at the season finale ("By Means Which Have Yet Been Tried"), Sarah makes the tough decision to surrender to Rachel's bosses at the DYAD Institute and subject herself to their poking, prodding, and invasive testing in the hopes that her "defective" clone DNA will be so valuable that DYAD will force Rachel to give Kira back to Mrs. S (Maria Doyle Kennedy) and Felix (Jordan Gavaris).

But as fans have come to learn over the last two twisty seasons, everything on Orphan Black can change in an instant and the final two minutes of every episode tend to be the most explosive.