TV Ratings: 'S.H.I.E.L.D.' drop slows, 'Person of Interest' rises and 'Voice' leads NBC Tuesday

A so-so premiere for "The Biggest Loser" combined with "The Voice" and "Chicago Fire" to help NBC win a slim Tuesday victory among young viewers, while CBS dominated the night overall led by "NCIS" and a rising "Person of Interest." The Originals and Supernatural both rose on Tuesday (October 15), giving The CW its best Tuesday since 2009.