Season 5 Sneak Peek S00 E06

Tatiana Maslany (as Sarah / Cosima / Alison / Helena / Rachel) Jordan Gavaris (as Felix 'Fee' Dawkins) Josh Vokey (as Scott Smith) Maria Doyle Kennedy (as Siobhan 'Mrs. S' Sadler) Ari Millen (as Mark / Rudy / Miller / Ira) Kevin Hanchard (as Detective Arthur 'Art' Bell) Kristian Bruun (as Donald 'Donnie' Hendrix)

sibling relationship clone experiment eugenics identity swap genetic enhancement