Sarah and Delphine team up to battle the neolutionists, family ties are strained and remade, and our clone hosts try to pick up the pieces after Orphan Black's shocking Season 3 finale.  Then, Hanna and Emma welcome back the father of modern cloning, Dr. Brian Chair, for a reconciliatitory chat....

Delphine goes full Single White Female on Shay, the Castor mole isn't who we expect, and Hanna and Emma explain what happens when our beloved Orphans head across the pond. Then, our clone hosts are joined by Dr. Carmen Blade, CEO of the Agnes Corporation, who thinks we all need clone cell lines...

Rachel is back, and she looks GOOD. Doctor Coady is unkillable, it turns out, and the Hendrix household gets another new member. Welcome Helena, you baby ox, you. Then, world-renowned cryptographer Johnny Taiwan joins Emma and Hanna to explain the science of cracking codes, and correctly guesses...