18 September 2010,
Here is the full synopsis/episode description for Nikita Season 1 Episode 5: "The Guardian" which airs on October 7th.

Divison’s secrets are at risk of being revealed to the world when Owen (guest star Devon Sawa, “Final Destination”), a Division operative, escapes from a bank robbery and becomes a fugitive. Percy decides to search for Owen himself, which makes Michael suspicious of his motives. Nikita and Owen go head-to-head until Percy joins them for a tense standoff. Alex sneaks into Percy’s office to warn Nikita, but she is busted by Thom and the two share an intimate moment. Aaron Stanford, Melinda Clarke and Tiffany Hines also star.

Labels: Nikita, Season 1, Spoiler, the CW