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  • "Superheroes: A Never-Ending Battle" (8 p.m. Tuesday, PBS): Fan boys and girls, rejoice. "Superheroes: A Never-Ending Battle" is a three-hour special that traces the evolution of the popular comic-book genre and its worldwide cultural effect. Among those commenting: Stan Lee, Adam West, Lynda Carter and Jules Feiffer.

  • "The Biggest Loser" (8 p.m., NBC): "Second chances" is the theme as Season 15 gets under way. Among the contestants is "American Idol" winner Ruben Studdard.

  • "Supernatural" (9 p.m., The CW): Dean (Jensen Ackles) gives Sam (Jared Padalecki) a shock when he reveals that he has kidnapped Crowley (Mark Sheppard) in order to find the demons on earth.

    Also:

    THE BIGGEST LOSER -- Episode 1501 -- Pictured: (l-r)  Fernanda Abarca, David Brown, Ruben Studdard, Hap Holmstead -- (Photo by: Trae Patton/NBC)
    THE BIGGEST LOSER -- Episode 1501 -- Pictured: (l-r) Fernanda Abarca, David Brown, Ruben Studdard, Hap Holmstead -- (Photo by: Trae Patton/NBC) ( NBC )

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

  • "NCIS" (8 p.m., CBS)

  • "The Originals" (8 p.m., The CW)

  • "Brooklyn Nine-Nine" (8:30 p.m., Fox)

  • "Tia and Tamera" (9 p.m., E!)

  • "The Mindy Project" (9:30 p.m., Fox)

  • "Real Husbands of Hollywood" (10 p.m., BET -- Season premiere)

  • "Chicago Fire" (10 p.m., NBC)

  • "Person of Interest" (10 p.m., CBS)

  • "Brew Dogs" (10 p.m. Esquire)