After a high-strung Boston lawyer inherits a house from her late aunt, she is surprised to find that it may be on the site of the first Thanksgiving on “The Thanksgiving House.” (Alexx Henry Studios/Hallmark)

Boston lawyer Mary Ross inherits a house in Plymouth, Mass., from her late aunt in “The Thanksgiving House” (Hallmark at 8 p.m.), but without her knowing it, the house turns out to be a historic landmark. After hearing of her intention to sell, local historians trace the home’s history back to the 17th century and have evidence that the house sits on the spot where the first Thanksgiving took place.

Kerry Washington is host of this week’s “Saturday Night Live” (NBC at 11:30), with musical guest Eminem.

Sunday talk shows: “Platts Energy Week” (WUSA at 7:30 a.m.) interviews author Daniel Yergin and Goldwyn Global Strategies’ David Goldwyn; “This Week in Defense News” (WUSA at 8) has Rear Adm. Thomas J. Moore; “BioCentury This Week” (WUSA at 8:30) features the Brookings Institution’s Farzad Mostashari; “Fox News Sunday” (Fox at 9) hosts the University of Pennsylvania’s Ezekiel Emanuel and Sen. Lindsey O. Graham (R-S.C.); “White House Chronicle” (WETA at 9) has journalist Robert Whitcomb and entrepreneur Jeff Giesea; “State of the Union” (CNN at 9) features Sen. Kelly Ayotte (R-N.H.).

“Government Matters” (WJLA at 9:30) hosts National Oceanic and Atmospheric Administration’s Joseph Klimavicz; “This Week” (ABC at 10) features White House adviser Dan Pfeiffer; “Newsmakers” (C-SPAN at 10) talks to Agriculture Secretary Tom Vilsack; “This Is America & the World” (WETA at 10 and WHUT at 6 p.m.) talks to author John Thavis; “Meet the Press” (NBC at 10:30) has former Republican presidential nominee Mitt Romney; “Face the Nation” (CBS at 10:30) talks to Sen. Dianne Feinstein (D-Calif.) and Rep. Mike Rogers (R-Mich.).

Sunday night, BET airs “Black Girls Rock!” (7), a show honoring exceptional women of color around the world who stand as inspirational role models.

RETURNING SHOW: “The Real Housewives of Atlanta” (Bravo at 8) are back for a sixth season that has NeNe and Kenya going head-to-head. Following Kenya’s notable absence from NeNe’s wedding, the two try to level with one another while the other stars of the show avoid the drama.

Examine the facts and evidence in the assassination of John F. Kennedy on “JFK: The Smoking Gun” (Reelz at 8). The two-hour documentary uses modern technology to analyze a crime every bit as shocking and incredible today as it was when it happened 50 years ago.

— Rachel Lubitz