James and Deborah Fallows books on small American hamlets, came with a book tour visiting many of the same places, chronicled in a documentary with the same name as the book, “Our Towns” (HBO, 9 p.m.), featuring more drone shots of sunsets than you thought was possible. The couple looks at cities that are working, from Sioux Falls, S.D., to Eastport, Maine; Charleston, W. Va.; and Bend, Ore. Their summation: The health of a town can be measured by the number of breweries it has.
“Big Sky” (ABC, 9 p.m.) is back with two new episodes before you entirely forget what happened earlier in its first season.
Kevin visits Randall in Philadelphia on “This is Us” (NBC, 9 p.m.).
On “Chad” (TBS, 10:30 p.m.), a gift from his estranged father goes awry at school.
“New Amsterdam” (NBC, 10 p.m.) begins a new policy, offering free care to HIV patients.
Frost is framed on “The Flash” (CW, 8 p.m.).