January 4, 2013 6:08 am Sneak Peek: “Biggest Loser” “The Biggest Loser” returns to NBC this Sunday, 9/8c, for season 14 with a special two hour premiere that features a mix of old and new and the return of trainer Jillian Michaels. NBC’s Mark Barger reports. US & World Videos 0:40 Watch: Police dog tracks and finds missing 85-year-old woman in Colorado 2:19 11-year-old celebrates teachers with appreciation snack cart 1:19 Met Gala 2024 after party looks: Cardi B, Lana Del Rey, EmRata 6:22 Craig Melvin compares ‘TODAY' crew to NASCAR 1:02 Judge indefinitely delays Trump's classified documents criminal trial