Orphan Black

Orphan Black (2013 – 2017)

2013 • 5 seasons • Drama, Sci-Fi & Fantasy • TV-MA

On August 8, 2026

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Episode 5 — Ipsa Scientia Potestas Est

Season 2 • Orphan Black

Released: 2014-05-17 • Drama/Sci-Fi & Fantasy

69%

User score

Rachel goes on the warpath, lashing out at Sarah's nearest and dearest. While she tries to keep her loved ones safe, an unexpected visitor threatens to derail Sarah's plans.

Episodes

Episode 1
Nature Under Constraint and Vexed
2014-04-19

Episode 2
Governed by Sound Reason and True Religion
2014-04-26

Episode 3
Mingling Its Own Nature with It
2014-05-03

Episode 4
Governed As It Were by Chance
2014-05-10

Episode 5
Ipsa Scientia Potestas Est
2014-05-17

Episode 6
To Hound Nature in Her Wanderings
2014-05-24

Episode 7
Knowledge of Causes, and Secret Motion of Things
2014-05-31

Episode 8
Variable and Full of Perturbation
2014-06-07

Episode 9
Things Which Have Never Yet Been Done
2014-06-14

Episode 10
By Means Which Have Never Yet Been Tried
2014-06-21

Information

Episode air date	17.05.2014
Episode runtime	44 min
Episode rating	6.90
Genres	Drama / Sci-Fi & Fantasy
TMDB series rating	7.8
IMDb series rating	8.3
Series status	Ended
Age rating	17+
Country	US / CA

Trailer

Cast

Tatiana Maslany

Tatiana Maslany
Sarah / Cosima / Alison / Helena / Rachel

Jordan Gavaris
Felix 'Fee' Dawkins

Josh Vokey
Scott Smith

Maria Doyle Kennedy

Maria Doyle Kennedy
Siobhan 'Mrs. S' Sadler

Ari Millen
Mark / Rudy / Miller / Ira

Kevin Hanchard
Detective Arthur 'Art' Bell

Kristian Bruun
Donald 'Donnie' Hendrix

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