'Orphan Black' Season 3 Sneak Peek: Meet the Castor Clones!

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BBC America’s sci-fi series Orphan Black returns for season three on April 18, and there are some new clones in the mix!

WATCH: New 'Orphan Black' Season 3 Trailer: Will We Lose Our Favorite Clone?!

In the show's shocking season two finale, fans learned that Sarah Manning, Beth Childs, Alison Hendrix, Cosima Niehaus, Rachel Duncan, Helena, and the other female clones (all played by the fantastically versatile Tatiana Maslany) were just one half of the equation. While the female clones of Project Leda were created and raised by the Dyad Institute, a "military faction" was responsible for their male counterparts, Project Castor.

"I met one of your brothers too," Sarah tells the Castor clone (let’s call him "Scarface") she saw locked up in a military cell in the finale. "I kicked him in the face."

WATCH: 'Orphan Black' Season 3 Trailer: The Castor Clones Are Here – And They're Terrifying!

Actor Ari Millen steps into a Maslany-like role in season three, going from playing one part as homicidal Prolethean Mark Rollins to taking on all the Castor clones after last season’s big reveal. In the sneak peek, we get a few more looks at Mark after his runaway wedding to Gracie, and are introduced to some more brothers, including one in a military uniform who is holding Helena hostage.

We count at least five unique male clones in the fast-paced teaser. Are you ready for Project Castor, Clone Club?

WATCH: 'Orphan Black' Sneak Peek: Sarah's Talk With a Castor Clone Will Give You Chills!

See more of Sarah's chilling talk with "Scarface" in the sneak peek clip below.

Orphan Black returns Saturday, Apreil 18 at 9 p.m. on BBC America.