The Race Underground (9 p.m., UNC-TV) – In this American Experience documentary, engineers overcome challenges to construct America’s first subway system in Boston.
Switched at Birth (9 p.m., Freeform) – In the Season 5 premiere, Bay and Daphne rush home from China after they receive an emergency call.
Outsiders (9 p.m., WGN) – A new arrival threatens to disrupt the balance of power on Shay Mountain.
Bones (9 p.m., Fox) – When a tutor who works with privileged students turns up dead, the team sifts through possible murderers.
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Frontline: Battle for Iraq (10 p.m., UNC-TV) – A report on the fighting inside Mosul, Iraq, includes comments from civilians, soldiers and ISIS suspects.
Taboo (10 p.m.m, FX) – James Delaney sets out to protect his business by any means necessary.