Threshold of Pain - S3.E12

Nikita, along with two other operatives Mark and Angela, are kidnapped by a two-person sibling terrorist team. Both Mark and Angela are tortured, but Mark breaks during the torture and tells the terrorist duo the location of a Section sub-station. After being rescued, Nikita plans with Mark to lie to Section and try to defeat the brother/sister team on their own. But when her plan fails, Mark blames Nikita for revealing the information, and she is put under trial.