Orphan Black 3×10 Promo “History Yet to Be Written” Season Finale

Orphan Black 3×10 “History Yet to Be Written” (Season Finale) – Castor and Topside force Sarah to make uneasy alliances. But there is some rest for the wicked, when Donnie gives Helena an unexpected ‘gift’, and the results of Alison’s candidacy finally come in. Even as team Leda takes a moment to breathe, change is afoot and a life hangs in the balance.