The Mitigation of Competition (S04E09)

Following Susan Duncan's ousting, Sarah is thrust into a similar predicament as Rachel, now under the control of a new ruthless leader, which prompts the two former foes to unite for a common cause. Cosima and Susan clash over the moral ramifications of conducting human experiments. In the meantime, as Adele, the Hendrixes' attorney, delves deeper into Donnie’s legal troubles, she starts to suspect that Felix is hiding significant truths. The unexpected return of Helena compels Felix to confront a challenging choice.