“Billions” (Showtime, 9 p.m.) returns for its sixth season, with Corey Stoll, above, stepping in where Damian Lewis stood (Lewis’ Bobby Axelrod took a deal to avoid jail and fled to Switzerland; Stoll’s character Michael Thomas Aquinius Prince bought him out). Returning cast includes Paul Giamatti, Maggie Siff, David Constabile and Asia Kate Dillon.
NFL divisional playoffs continue with Rams at Tampa Bay (NBC, 3 p.m.) and Buffalo at Kansas City (CBS, 6:30 p.m.).
Speaking of the NFL, a new five-part documentary series discuss the women in the league in “Earnin’ It: The NFL’s Forward Progress” (Peacock, streaming).
The latest variation of the hit series looks at the creation of individual characters. “The Walking Dead: Origins” (AMC, 9 p.m.) begins with Norman Reedus discussing the story of apocalypse survivor Daryl Dixon.
On “Somebody Somewhere” (HBO, 10:43 p.m.), Sam starts to bond with choir practice members.
The concluding half of the documentary series “Reframed: Marilyn Monroe” (CNN, 9 p.m.) covers the end of her short career.
“Around the World in 80 Days” (PBS, 8 p.m., check local listings) goes to a wedding in Inia.
James and Helen have their first argument on “All Creatures Great and Small” (PBS, 9 p.m., check local listings).