Outsiders The Appalachian drama returns for a new season. 6, 7, 8 and 9 p.m. WGN America
NCIS While the team is investigating a hit-and-run incident, Jimmy Palmer (Brian Dietzen) climbs onto the ledge of a building in an attempt to keep someone from committing suicide. Spencer Treat Clark guest stars. Mark Harmon, Pauley Perrette, Sean Murray and Wilmer Valderrama also star. 8 p.m. CBS
The Flash Distressed by a vision of Iris (Candice Patton) becoming a victim of Savitar, Barry (Grant Gustin) fears that catching Plunder (Stephen Huszar) could lead to Iris getting killed. Danielle...