BBC America has released 14 new images from the upcoming fourth season of "Orphan Black."

The new season of the acclaimed sci-fi thriller sees Sarah (Tatiana Maslany) returning home from her Icelandic hideout to track down an elusive new ally tied to deceased clone Beth (Maslany), whose identity Sarah stole in the very first episode. With the stakes higher than ever before, Sarah and her sisters band together to uncover the missing chapter of the clone conspiracy – following Beth’s footsteps into a dangerous relationship with a potent enemy, who holds the key to their survival.

"Orphan Black returns Thursday, April 14, at 10 p.m. ET/PT on BBC America.