Plot summary
Alex is nervous upon learning she will be tasked to assassinate the leader of a crime syndicate named Zoman, so she can graduate to a field agent. Nikita decides to help her, but Alex insists she can do the kill herself. Birkhoff discovers the shell program used by Nikita to make contact with her operative inside. During the operation, Alex cannot bring herself to kill Zoman, Nikita intervenes while Thom kills Zoman. Realising Alex may die because of her failure, Nikita allows Alex to capture her so they can both escape afterwards.
While Amanda interrogates Nikita, trying to make her reveal the identity of the mole and the location of the black box she has in her possession (which was destroyed at the end of the previous episode), Alex plants explosives as a diversion. However, Thom discovers she is the mole. After the explosives detonate, Alex fights with Thom and accidentally kills him. Nikita tries to take Alex, but she stays behind and frames Thom as the mole. After all potential escape routes are closed off following Nikita's escape, Percy promotes Alex to field agent.
Credits
Adapted from Wikipedia contributors, Nikita season 1. HTML formatting and reference markers removed.