Television News 'Timeless' series finale to air in December on NBC 08/26/2018 The writing team of NBC's twice-canceled "Timeless" sci-fi series say the show's 2-hour finale is slated to air in December. Read More RELATED NEWS Jimmy Fallon's 'The Tonight Show' dropping to only four nights a weekAshley Tisdale announces birth of her second childSelena Gomez is a billionaire TAGS: Abigail Spencer Matt Lanter Malcolm Barrett Jesse James Timeless
