The death of Orphan Black's Kendall Malone will bring all four seasons to a boiling point.

There's a new villain on the block, and Evie Cho (Jessalyn Wanlim) brought the Leda clone's genetic source code to her knees in "The Scandal of Altruism." Not only is Siobhan's (Maria Doyle Kennedy) mother dead, but, thanks to a misunderstanding on Sarah's (Tatiana Maslany) part, her DNA is also gone for good.

"Obviously this was a big emotional decision, but also it's a decision that puts everybody in a very difficult place," series creator John Fawcett grimly told Entertainment Weekly of Kendall's (Alison Steadman) ultimate demise. "Where we thought we had a sure fire answer, now suddenly we don't. In fact, we've got nothing. In fact, we've got less than what we began with.

Even though the events of episode 6 left Sarah and Co. with a big fat goose egg , four year of plot (or six months if you want to use the actual time line) will come to a head in next Thursday's "The Antisocialism of Sex." Focused more on character development than plot, episode 7 will mark a departure from Orphan Black's standard fare.

"It's probably not too much of a spoiler to say it was known in the writer's room as the 'Dark Night of the Soul,' so this is the Dark Night of Orphan Black's Soul, with four seasons coming to a head next week," executive producer Graeme Manson previewed.

Were you sorry to see Kendall go is such complete and spectacular fashion? Tell us what you thought of the game-changing episode in the poll below!

Find out more when Orphan Black airs Thursdays at 10 p.m. ET on BBC America. Click the video below to see a preview for the series' next episode, "The Antisocialism of Sex."

What did you think of episode 6?