WATCH THIS:

  • "Extreme Weight Loss" (8 p.m., ABC): Tonight's episode follows the sad tale of a 46-year-old widow of a military veteran. Her husband returned from Afghanistan with PTSD and eventually took his own life. Now, she is seeking a fresh start.

  • "History Detectives Special Investigations" (9 p.m., PBS): The franchise kicks off Season 11 with a new format that focuses on one iconic mystery per episode. Up first: the 1865 explosion of the SS Sultana, a Mississippi steamboat packed with Union soldiers.

  • "The Night Shift" (10:01 p.m., NBC): The medics have their hands full when a horrific crash sends dozens of soldiers, including Drew's (Brendan Fehr) boyfriend, to the emergency room.

    Kaiama Glover and Wes Cowan on ’History Detectives Special Investigations.’
    Kaiama Glover and Wes Cowan on 'History Detectives Special Investigations.' (Nazenet Habtezghi/PBS)

    Also on Tuesday:

  • "America's Got Talent" (8 p.m., NBC)

  • "Famous in 12" (8 p.m., The CW)

  • "Pretty Little Liars" (8 p.m., ABC Family)

  • "Storage Wars" (9 p.m., A&E)

    "Chasing Life" (9 p.m., ABC family)

  • "The Real Housewives of New York City" (9 p.m., Bravo)

  • "Deadliest Catch" (9 p.m., Discovery)

  • "The Haves and Have Nots" (9 p.m., OWN)

  • "Royal Pains" (9 p.m., USA)

  • "Rizzoli & Isles" (9 p.m., TNT)

  • "Drunk History," Season premiere (10 p.m., Comedy Central)

  • "Chopped" (10 p.m., Food Network)

  • "Tyrant" (10 p.m., FX)

  • "Perception" (10 p.m., TNT)

  • "House Hunters" (10 p.m., HGTV)

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