Undercover Boss: The CEO of Philly Pretzel Factory literally makes the dough in this new episode (8 p.m. CBS).
Who Do You Think You Are? Rob Lowe traces his family history (8 p.m. NBC).
Nikita: Nikita (Maggie Q) persuades Birkhoff (Aaron Stanford) to put up $20 million to trap Percy (Xander Berkeley) in this new episode. Lyndsy Fonseca also stars. (8 p.m. KTLA).
Supernatural: Dick Roman (James Patrick Stuart) gets his hands on Frank’s hard drive, which has sensitive data about Sam and Dean (Jared Padalecki, Jensen Ackles), and gives it to a hacker (Felicia Day) in the new episode (9 p.m. KTLA).
Whale Wars: Viking Shores: The lines between heroes and villains get blurrier when the “bad guys” are native islanders with a centuries-old cultural tradition of whaling in this new five-part “Whale Wars” spinoff (9 p.m. Animal Planet).
Fairly Legal: Kate (Sarah Shahi) mediates a dispute between a school she attended and an expelled student (9 p.m. USA).
Blue Bloods: Danny and Jackie (Donnie Wahlberg, Jennifer Esposito) realize someone is leaking information to the wrong people when an attempt is made on the life of the Russian mob witness they’re protecting in this new episode (10 p.m. CBS).
In Plain Sight: To clear her name Mary (Mary McCormack) must lose an FBI tail and find her father (Stephen Lang) in this new episode (10 p.m. USA).
Baseball: The Angels visit the Cleveland Indians (4 p.m. FSN); the Washington Nationals visit the Dodgers (7 p.m. FS Prime).
Hockey: NHL Playoffs (4 and 6:30 p.m. NBCSP).