Orphan Black S04E06 "The Scandal of Altruism"
Season: 4 | Episode: 06 | Original Air Date: May 19, 2016
When Cosima admits doubts about finding a cure in time to save her life, Sarah makes a lone decision that exposes Kendall to those she’s spent years hiding from. Meanwhile, Art and Felix team up to protect naïve clone, Krystal Godderitch, from herself.
Source: BBC America