Orphan Black

Sarah pursues Helena, who is being held in a compound far away; Sarah must deter a Topside investigator.

Castor pursues the clones in order to obtain original tissue samples; Helena is examined by a new villain.

Leda and Castor hunt for the original clone DNA; Mark and Gracie pursue new leads; Art and Sarah reunite.

Helena works in a faraway military compound; Sarah's fate hangs in the balance as she tries to save her sister.

Sarah and Helena suffer a strained reunion; the Leda family worries about Sarah's absence; Cosima goes on a date with Shay.

Paul learns the truth about Coady's plans for Castor and has no choice but to make a dangerous play; Alison and Donnie hatch a plot of their own regarding Bubbles.

Alison must secure a storefront to take her business to the next level; Cosima faces health issues and asks for a favor.

Rachel bargains for her freedom with decoding Duncan's Moreau book; Sarah must pursue the Original Castor.

Clone Club heads to London to track down the Castor Original, but their enemies are not too far behind.

Clone Club races toward the truth; Sarah is forced to make uneasy alliances; Donnie gives Helena an unexpected gift; the candidacy results are in.