Orphan Black 5×04 Promo “Let the Children and Childbearers Toil”

Orphan Black 5×04 “Let the Children and Childbearers Toil” Season 5 Episode 4 Promo – Mrs. S and Sarah team up to investigate a lead on a Neolution defector. Elsewhere: an unexpected reunion takes place on the island and Cosima makes a terrible discovery during her research.