In the Supernatural (8 p.m., CW/Ch. 30) reality, angels are not necessarily good. A lot of them are bad.And in tonight's episode, titled "Holy Terror," a lot of angels are slaughtered.Elsewhere on TV ...The Biggest Loser (7 p.m., NBC/Ch. 5): A contestant goes home for a week.The Originals (7 p.m., CW/Ch. 30): Hayley learns about the plan to go after werewolves.Men's college basketball: North Texas at BYU (7 p.m., BYUtv); Utah at Boise State (8 p.m., CBSSN)Brooklyn Nine-Nine (7:30 p.m., Fox/Ch. 13): Holt gets death threats.The Goldbergs (8 p.m., ABC/Ch. 4): Erica gets a job.The Voice (8 p.m., NBC/Ch. 5): More eliminations.Trophy Wife (8:30 p.m., ABC/Ch. 4): Kate sets Diane up on a date.The Mindy Project (8:30 p.m., Fox/Ch. 13): Mindy plans a Christmas party.Chicago Fire (9 p.m., NBC/Ch. 5): Boden tries to save the firehouse.Sons of Anarchy (11 p.m., FX): Jax's world is turned upside-down.