Manhattan The second season of the historically based series ends with the first test of an atomic weapon. 6, 7, 9 and 10 p.m. WGN America
NCIS Ducky (David McCallum) is attacked by a man who claims to have information about his half brother, who died decades earlier. Adam Campbell reprises his role as a young Ducky. 8 p.m. CBS
Nick News With Linda Ellerbee Anchor Linda Ellerbee offers a retrospective of the current events for kids series, including highlights some of the most poignant episodes and discussions in the series finale. 8 p.m. Nickelodeon
NCIS: New Orleans Wade...