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  • "The African Americans: Many Rivers to Cross" (8 p.m., PBS): In this documentary series, Harvard scholar Henry Louis Gates chronicles the history of black America, beginning with the 16th century. 8 p.m., PBS.

  • "Ravenswood" (9:02 p.m., ABC Family): A creepy spin off "Pretty Little Liars" that has Caleb (Tyler Blackburn) learning about a deadly curse linked to Ravenswood's bizarre history. It airs immediately after the show that spawned it.

  • "Chasing Nashville" (10 p.m., Lifetime): This new reality series follows four teens from Appalachia as they pursue their dreams of becoming country music stars. The opener takes us to the annual Hillbilly Days singing competition. Also Tuesday:

    RAVENSWOOD - "Pilot" - After opting to stay in Ravenswood to help out new pal Miranda, Caleb begins to rethink his decision, especially after he
    RAVENSWOOD - "Pilot" - After opting to stay in Ravenswood to help out new pal Miranda, Caleb begins to rethink his decision, especially after he meets Miranda's cold and unwelcoming uncle Raymond (Steven Cabral). Caleb also has some unpleasant interactions with local resident Luke (Brett Dier), who is struggling to deal with a recent family tragedy and its ensuing scandal, which has also swept up his twin sister Olivia (Merritt Patterson) in the series premiere of "Ravenswood," airing Tuesday, October 22nd (9:00 - 10:00 PM ET/PT). (ABC FAMILY/Skip Bolen) NICOLE GALE ANDERSON, TYLER BLACKBURN ( Skip Bolen )

  • "The Originals" (8 p.m., The CW)

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

  • "NCIS" (8 p.m., ABC)

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

  • "Supernatural" (9 p.m., The CW)

  • "New Girl" (9 p.m., Fox)

  • "American Daredevils" (10 p.m., Discovery -- Series premiere)

  • "Chicago Fire" (10 p.m., NBC)

  • "Awkward" (10:30 p.m., MTV -- Midseason premiere)