Plot summary
Sarah is taken to the Castor base, much to Paul's dismay; Mark would have let her go, but since deranged Rudy was there, this was the best option. Sarah also has a strained reunion with Helena, who blames her for her capture; Coady had been feeding her lies about the capture, indicating Sarah, not Siobhan was responsible. Although Coady assures Paul no harm would come to Sarah, she still collects a lot of her blood to gather stem cells. Cosima goes on a blind date with Shay Davydov ( Ksenia Solo ), a holistic healer, and quickly begins a physical relationship.
However, the date is monitored. Gracie, with nowhere to go, approaches Art, who takes her to Felix and Mrs. S. There, Gracie comes out of her shell and parties with the others, getting drunk before suffering a seizure, displaying bloodshot eyes. Sarah and Helena plot an escape, and Helena successfully exits her cell, but she decides to leave Sarah behind. As she is about to leave the compound, she begins to have second thoughts. Art also meets with the woman assaulted by Rudy and Seth, learning that she has the same symptoms as Gracie.
Credits
Adapted from Wikipedia contributors, List of Orphan Black episodes. HTML formatting and reference markers removed.