Monday, December 17, 2018 ABC 8:00 p.m. “The Great Christmas Light Fight” (season finale, two hours) 10:00 p.m. ABC News: “The Year in Memoriam 2018” CBS 8:00 p.m. “The Neighborhood” 8:30 p.m. “Happy Together” 9:00 p.m. “Magnum P.I.” (R) 10:00 p.m. “Bull” (R) NBC 8:00 p.m. “The Voice” (two hours) 10:00 p.m. “America’s Got Talent”: […]