Orphan Black Season 3 Trailer Reveals the Clones' Terrifying New Threat

“One day, I kill you all” is just one of the many delightful exchanges in the first official trailer for Orphan Black‘s upcoming third season (and we’ll give you one guess which clone says it).

BBC America on Monday released a one-minute sneak peek of the new season, premiering April 18 at 9/8c, which finds Sarah leaning on her fellow same-faces like never before. And when someone tries to come between them — in this case, Mrs. S, who played a part in Helena’s kidnapping — they get the full “That’s not your bloody decision!” treatment. (See? We told you the video is full of delightful exchanges.)

Season 3 also finds the clones working even harder to figure out what they really are, although doing so will require them to face off against the militarized Castor clones (played by Ari Millen), while simultaneously trying to cure Cosima and deal with the constant problem that is Alison’s husband Donnie.

Hit PLAY on the trailer above to get your first look at Season 3, then drop a comment below: How do you hope this all plays out?