NGTV Guide: Friday, February 17

Nikita – 8/7c the CW
“Origins” – Nikita and Michael try to help Carla (guest star Erica Gimpel) remember her past, which holds the key to taking down Division. Carla recounts the night Nikita was arrested and Nikita is stunned at what she learns. Meanwhile, Alex shows up at a Zetrov press conference where Semak (guest star Peter J. Lucas) is speaking and announces that she’s Alexandra Udinov. Alex demands a trade: her mother for the empire.

Fringe – 9/8c FOX
“A Better Human Being” – As the Fringe team investigates a mentally ill patient who appears to be connected to a series of murders, frightening clues and connections are uncovered that lead Olivia to some shocking revelations.

Supernatural – 9/8c the CW
“Repo Man” – Four years ago, Sam and Dean helped a woman named Nora (guest star Nicole Oliver) exorcise a demon that was systematically killing women in a small town. They managed to save the postal worker, Jeffrey (guest star Russell Sams), while vanquishing the demon but now it seems the black-eyed monster has reared his ugly head and returned for a second helping. The brothers visit Jeffrey, who has been locked in a psych ward since the incident, to see if he can remember any of the demon’s plans while he was possessed.

Merlin – 10/9c Syfy
“The Secret Sharer” – Morgana joins forces with the enigmatic wizard Alator to uncover a secret that could change the future.With allies on both sides of the castle walls, can anyone stop her before Merlin’s greatest secret is revealed?