Nikita moves in with Michael and his family in order to help Section One locate and kill Elena's father--Salla Vacek. Section One captures and tortures one of Vacek's Cambridge classmates to elicit information about the terrorist's activities.
Section One orders Michael to poison Elena in order to trap her father, international terrorist Salla Vacek. From her hospital bed, Elena witnesses the actual death of her father and the staged death of her husband, Michael.
Unable to see his son ever again, Michael contemplates suicide. On a mission with Michael, Nikita is kidnapped. With total disregard for his personal safety, Michael kills many enemy agents and successfully rescues Nikita.
Without Section One's knowledge, Nikita is ambushed during a mission and replaced by a Red Cell look-alike. Nikita is forced to assist her double in order to protect Michael. Series star PETA WILSON plays a dual role.
Michael empties a vial containing a psychotropic agent into Operations' coffee mug. As his judgement disintegrates and paranoid delusions increase, Operations sends operatives on a mission to capture a man who's been dead for four years.
A new recruit--someone from Nikita's past--knows where Nikita can find her mother. Nikita enlists Michael's aid when she realizes that her mother (MARGOT KIDDER) has hired a private investigator because she doesn't believe Nikita is dead.
On a mission to terminate a terrorist organization called Black March, Nikita and two fellow operatives, are captured. Mark reveals the location of a Section substation to save Angela, his lover, from torture, but later blames Nikita for the disclosure.
When another operative, Zalman, gets promoted to head strategist instead of Michael, Michael and Nikita flee Section One. Section operatives capture Michael, who refuses to reveal Nikita's location until Zalman shows him a videotape of his son, Adam.
To capture an industrialist who finances terrorist bombings around the world, Nikita thinks that she is infiltrating a white slavery ring, but she finds her mission at an adult entertainment complex far more deadly.
When a captured terrorist kills herself, Section One recruits Sarah Gerard, an innocent look-alike with a terminal disease, to learn the location of a terrorist group's headquarters. Madeline lies about having an antidote to Sarah's illness.
When the terrorist group Glass Curtain discovers Section One's location, Operations evacuates everyone and incinerates the underground facility. Section One operatives kill everyone at Glass Curtain headquarters.
Believing that Michael and Nikita's relationship compromises Michael's decision-making ability and jeopardizes Section One's missions, Operations and Madeline set in motion another plan to separate the two operatives. A rift develops between Walter and Birkoff when they date the same woman, a beautiful mission profiler.
Operations sends Michael's team to steal detonation chips from the base camp of the kamikaze terrorist group Crimson Storm. After the successful mission, Michael and Nikita steal away for a romantic interlude, but Birkoff feels obligated to report them to Madeline and Operations.
Nikita and Michael infiltrate Genefex, a pharmaceutical lab making biological weapons for Red Cell. At Genefex, Nikita unexpectedly encounters Madeline, who uses a combination of chemical and electronic means to neutralize Nikita's feelings...