WATCH THIS:

  • "NCIS" (8 p.m., CBS): In a Christmas-themed episode, Gibbs (Mark Harmon) and Ellie (Emily Wickersham) investigate a mysterious illness that has broken out among dozens of children of military families. Meanwhile, others rush to find a cure before the holidays.

  • "The Voice" (9 p.m., NBC): They proved they could carry a tune. Now, on the season finale of "The Voice," someone will carry away the top prize, which includes a lucrative record deal. And finally, a coach other than Blake Shelton will be able to celebrate.

  • "How Sherlock Changed the World" (9 p.m., PBS): is a compelling documentary that takes Arthur Conan Doyle's famous sleuth from fiction to reality and examines how he had a revolutionary impact on actual criminal investigations.

    "Homesick" -- After a mysterious illness strikes children from military families, Gibbs and the team investigate the cause. Meanwhile, Abby and
    "Homesick" -- After a mysterious illness strikes children from military families, Gibbs and the team investigate the cause. Meanwhile, Abby and Jimmy partner with the Naval Medical Research Center to determine the strain of illness, all in hopes of delivering a cure before the holidays, on NCIS, Tuesday, Dec. 17 (8:00-9:00 PM, ET/PT) on the CBS Television Network. Pictured left to right: Meredith Eaton, Pauley Perrette, Mark Harmon and Brian Dietzen Photo: Sonja Flemming/CBS ÃÉÂÇÃÇ©2013 CBS Broadcasting, Inc. All Rights Reserved ( Sonja Flemming )

    Also Tuesday:

  • "The Biggest Loser" (8 p.m., NBC)

  • "Marvel's Agents of S.H.I.E.L.D" (8 p.m., ABC)

  • "NCIS: Los Angeles" (9 p.m., CBS)

  • "The Polar Express," 2004 movie (9 p.m., ABC Family)

  • "Storage Wars Texas" (9 p.m., A&E)

  • "Person of Interest" (10 p.m., CBS)

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