Orphan Black/Knowledge of Causes, and Secret Motion of Things

Knowledge of Causes, and Secret Motion of Things
Season 2, Episode 7
Airdate	May 31, 2014
Written by	Aubrey Nealon
Directed by	Ken Girotti
← 2x06 To Hound Nature in Her Wanderings	2x08 → Variable and Full of Perturbation
Orphan Black — Season Two

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Knowledge of Causes, and Secret Motion of Things is the seventh episode of the second season of Orphan Black, and the seventeenth episode overall.

Starring: Tatiana Maslany (Sarah Manning, Alison Hendrix, Cosima Niehaus, Rachel Duncan), Dylan Bruce (Paul Dierden), Jordan Gavaris (Felix Dawkins), Kevin Hanchard (Arthur "Art" Bell) (credit only), Evelyne Brochu (Delphine Cormier)

and Maria Doyle Kennedy (Siobhan "Mrs. S" Sadler)

Guest Starring: Michiel Huisman (Cal Morrison), Michael Mando (Victor "Vic" Schmidt)

and Michelle Forbes (Dr. Marion Bowles)

Guest Starring (end credits): Matt Frewer (Dr. Aldous Leekie), Skyler Wexler (Kira), Kristian Bruun (Donnie Hendrix), Inga Cadranel (Angela Deangelis), Josh Vokey (Scott), Raven Dauda (Yvonne), Andrew Gillies (Ethan Duncan), Kathryn Alexandre (Tatiana Maslany's Acting Double)

Cast: Millie Davis (Gemma), Drew Davis (Oscar), Terra Hazelton (Sarah Stubbs), Dylan Trowbridge (Addict), John Nelles (Dialogue Coach)