By Sandra Gonzalez
Updated December 25, 2012 at 05:00 PM EST
Orphan Black
Credit: BBC America

BBC America will have a new, action-packed addition to its Supernatural Saturday lineup come March.

EW has learned exclusively that Orphan Black, a new original sci-fi scripted series starring Canadian actress Tatiana Maslany (The Vow), will premiere March 30 at 9p.m. ET on BBC America. We also have your first look at the key art and teaser trailer, both of which you can see below.

The show follows the story of a girl named Sarah (Maslany), who assumes the identity of a woman only to later learn the deceased is her clone. Sarah must then unravel a twisted and dark conspiracy — while also trying to stay alive.

The trailer below will premiere during the Doctor Who Christmas Special, which airs tonight.

Orphan Black
Credit: BBC America

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Credit: Lewis Jacobs/NBC