The TVLine-Up: TV Worth Watching This Friday

On TV this Friday: Nikita heads to Russia with little love, the Fringe team tracks a bitter killer, Spartacus rallies the troops and more. In addition to TVLine’s original features (linked in red) and March Madness taking place on CBS, here are seven programs to keep on your radar.

8 pm Who Do You Think You Are? (NBC) | Mad About You‘s Helen Hunt learns of the trials and triumphs of her paternal ancestors, including her great-great-grandfather’s involvement in launching Wells Fargo and her great-great-grandmother’s role in the fight for women’s rights.

8 pm Nikita (The CW) | Michael is furious when he discovers a secret that Cassandra kept from him, so he and Nikita fly to Moscow to confront her; Alex makes a last ditch effort to find her mother by sending out a coded message through a televised interview. (Watch our exclusive first look video!)

Misha Collins Previews His Supernatural Return and the ‘Wildly Different’ Castiel to Come

9 pm Fringe (Fox) | Following the recent shocking revelations and emotional events, Peter weighs his options as the team investigates a killer targeting love. P.S. Eight straight weeks of all-new episodes start now! (Get scoop!)

9 pm Fairly Legal (USA) | A negotiation between the FBI and a hospital over an emergency liver transplant seems simple until Kate discovers another patient was bumped from the donor list to accommodate the Feds. Mark Margolis (Breaking Bad) and Barry Shabaka Henley (FlashForward) guest-star.

Ask Ausiello: Spoilers on Fringe, Castle, HIMYM, NCIS, Grey’s, The Killing and More!

10 pm In Plain Sight (USA) | Mary must juggle WITSEC with her new childcare duties after a hoarder witnesses a violent murder. Twin Peaks‘ Mädchen Amick and General Hospital alum Tia Carrere guest-star.

10 pm Spartacus: Vengeance (Starz) | Spartacus must convince his people to unite against the imminent Roman assault; Lucretia struggles to be free from the commands of men who threaten her fate.

10 pm Merlin (Syfy) | In Part 1 of the Season 4 finale, Morgana closes in on Camelot as she leads the powerful Southron army, successfully forcing Arthur and his close loyals to run for their lives; smugglers Tristan and Isolde have little love for Arthur.

Which of the above is must-see for you? Also, hit Comments to offer your own tune-in suggestions.