Tatiana Maslany may not have gotten the Emmy win for Orphan Black, but Season 4 will put her right back to work with a “horrifying new direction” to chart. Production has officially begun, and a new synopsis promises to revisit Orphan Black‘s oldest mystery.

Where Season 3 ended on a (relatively) peaceful note for the #CloneClub, Season 4 will spinter its sestras once again, particularly as Sarah delves deeper into the mystery of Beth Childs, and seemingly confronts some of her own demons along the way. So reads the first official synopsis:

Season four of the drama will see leader-of-the-pack, Sarah, reluctantly return home from her Icelandic hideout to track down an elusive and mysterious ally tied to the clone who started it all – Beth Childs. Sarah will follow Beth’s footsteps into a dangerous relationship with a potent new enemy, heading in a horrifying new direction.

Under constant pressure to protect the sisterhood and keep everyone safe, Sarah’s old habits begin to resurface. As the close-knit sisters are pulled in disparate directions, Sarah finds herself estranged from the loving relationships that changed her for the better.

As to the rest of Orphan Black Season 4, we know that the return of “Neolution” will bring about a resurgence of the clone series’ early body horror tropes, while a recent panel confirmed that Evelyne Brouchu’s Delphine is only “Orphan Black dead.” We’ll also see more of clone addition Krystal, get a bit more clarification on Kira’s mysterious abilities, and likely see a number of other character returns.

Stay tuned for the latest on Orphan Black Season 4 in 2016, but what should we make of the synopsis? Will we finally learn what drove Beth Childs to dive in front of a train?