Orphan Black - Season 1 - Eps 5: Conditions of Existence
When terrifying evidence suggests the Orphans are part of a sinister ongoing experiment, Sarah’s suspicions turn to Paul, Beth’s boyfriend. But her probing inadvertently triggers Paul’s own investigation, bringing him dangerously close to the truth. Meanwhile, paranoid Alison piles on a whole new level of complication.
About Orphan Black

Title: Orphan Black
First Air Date: 2013-03-30
Last Air Date: 2017-08-12
Status: Ended
Rating: 7.804/10 (from 1283 votes)
Language: EN
Seasons: 6
Total Episodes: 50
Network: Space BBC America
Genres: Drama, Sci-Fi & Fantasy
Production Companies: Bell Media, Temple Street Productions, BBC America
Synopsis
A streetwise hustler is pulled into a compelling conspiracy after witnessing the suicide of a girl who looks just like her.
Cast

Tatiana Maslany
Sarah / Cosima / Alison / Helena / Rachel

Jordan Gavaris
Felix 'Fee' Dawkins

Josh Vokey
Scott Smith

Maria Doyle Kennedy
Siobhan 'Mrs. S' Sadler

Ari Millen
Mark / Rudy / Miller / Ira

Kevin Hanchard
Detective Arthur 'Art' Bell

Kristian Bruun
Donald 'Donnie' Hendrix