WATCH THIS:

  • "The Biggest Loser" (8 p.m., NBC): The reality show continues with an episode that has our contestants visiting Olympic Park in Utah. There, they get fitness tips from Olympians, including speedskater Apolo Anton Ohno.

  • "Pretty Little Liars" (8 p.m., ABC Family): Hanna, Aria, Emily and Spencer (Ashley Benson, Lucy Hale, Shay Mitchell, Troian Bellisario) hope to find some answers in Ali's (Sasha Pieterse) diary. Now, if only all the entries weren't in code.

  • "Justified" (10 p.m., FX): As Harlan (Timothy Olyphant) tries to help a friend out of a jam, Dewey's (Damon Herriman) shady cousin Darryl (Michael Rapaport) pays a visit.

    Apolo Anton Ohno guest stars on "The Biggest Loser" on Jan. 14, 2014.
    Apolo Anton Ohno guest stars on "The Biggest Loser" on Jan. 14, 2014. (NBC)

    Also on Tuesday:

  • "NCIS" (8 p.m., CBS)

  • "The Originals" (8 p.m., The CW)

  • "Marvel's Agents of S.H.I.E.L.D." (8 p.m., ABC)

  • "American Experince: 1964" (8 p.m., PBS)

  • "NCIS: LA" (9 p.m., CBS)

  • "Ravenswood" (9 p.m., ABC Family)

  • "Face Off," Season premiere (9 p.m., Syfy)

  • "Kroll Show," Season premiere (10:30 p.m., Comedy Central)

  • "Shipping Wars," Season finale (10:30 p.m., A&E)

    Contact Chuck Barney at Facebook.com/BayAreaNewsGroup.ChuckBarney, or Twitter.com/chuckbarney