WATCH THIS:

  • "Longmire" (10 p.m., A&E): Bad guys beware: The third season of this engaging drama launches tonight, which means the laconic lawman (Robert Taylor) is back on duty in Wyoming's Absaroka County.

  • "Ladies of London" (10 p.m., Bravo): They may not be the real housewives of wherever, but this new reality series appears to be going for a similar vibe. It focuses on the everyday drama of British socialites and American transplants living in England as they navigate the elite social scene.

  • "Mistresses" (10:01 p.m., ABC): Things are heating up and not just because summer is near. The sizzling melodrama "Mistresses" returns for its second season. Now just try to keep your TV from melting.

    Also on Monday:

  • "The Bachelorette" (8 p.m., ABC)

  • "MasterChef" (8 p.m., Fox)

  • "Whose Line Is It Anyway?" (8 p.m., The CW)

  • "24: Live Another Day" (9 p.m., Fox)

  • "American Ninja Warrior" (9 p.m., NBC)

  • "Beauty and the Beast" (9 p.m., The CW)

  • "Swamp People" (9 p.m., History Channel)

  • "Louie" (10 p.m., FX)

  • "Hotel Impossible" (10 p.m., Travel Channel)

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