“The Real Housewives of Potomac” (Bravo, 9 p.m.) begins its fifth season from suburban Maryland. 

“Wynonna Earp” (Syfy, 10 p.m.) works with a new ally to rescue her family. 

Sara seeks help from Joanna in following their prime suspect on the first of two episodes of “The Alienist: Angel of Darkness” (TNT, 9 and 10 p.m.).

The two hour special “Hiroshima: 75 Years Later” (History, 9 p.m.) recalls the horror of the atomic bomb, dropped in Japan on Aug. 6, 1945. 

A winner is named on “Tournament of Laughs” (TBS, 10 p.m.). 

What kind of people could be convinced to hear stories of the paranormals and such? “The Osbournes Want to Believe” (Travel, 10 p.m.). Or do they just want to extend their unlikely reality TV career?

Hanging ten can be dangerous for your toes, we learn on “Shark vs. Surfer” (National Geographic, 8 p.m.). 

On the new Canadian import “Fridge Wars” (CW, 8 p.m.), competing chefs use leftover ingredients in random refrigerators to make winning meals.

A camping trip to celebrate a one-year anniversary ends with the husband dead on the made-for-TV thriller “A Murder to Remember” (Lifetime, 8 p.m.).

Strickland loses track of a key witness on “Perry Mason” (HBO, 9 p.m.). 

On a new “Elizabeth Smart: Finding Justice” (Lifetime, 10 p.m.), one former captive interviews another as the host meets Candra Torres. 

Bing begins questioning his vampire master on “NOS4A2” (AMC, BBC America, 10 p.m.).

“Autopsy” (Reelz, 8 p.m.) looks at the final hours of David Cassidy, and then at 9, Larry Hagman. 

Water sporting continues on “Cannonball” (NBC, 7 p.m.). 

On “P-Valley” (Starz, 8 p.m.), Autumn is welcomed by the club owner.

A hurricane slows work on “Renovation Island” (HGTV, 8 p.m.).

Rock Hudson is star all day on Turner Classic Movies with “Winchester ’73” (6 a.m.), “Something of Value” (8 a.m.), “A Fine Pair” (10 a.m.), “All That Heaven Allows” (noon), “The Golden Blade” (1:45 p.m.), “Written on the Wind” (3:15 p.m.), “Ice Station Zebra” (5:15 p.m.), “Pillow Talk” (8 p..m.), “Magnificent Obsession” (10 p.m.), “Giant” (midnight) and “Pretty Maids All in a Row” (3:45 a.m.). 

Baseball includes Mets at Atlanta (TBS, 1 p.m.), Dodgers at Arizona and Boston at Yankees (ESPN, 7 p.m.).

NBA games include Portland vs. Boston (ABC, 3:30 p.m.), Sacramento vs. Orlando (NBA, 6 p.m.) and Milwaukee vs. Houston (ABC, 8:30 p.m.).

Hockey has Arizona vs. Nashville (USA, 2 p.m.), Philadelphia vs. Boston (NB, 3 p.m.), St. Louis vs. Colorado (NBC Sports, 6:30 p.m.), Columbus vs. Toronto (NHL, 8 p.m.) and Minnesota vs. Vancouver (NBC Sports, 10:30 p.m.). 

In the WNBA, it’s Phoenix vs. New York Liberty (ESPN, 1 p.m.), Atlanta vs. Indiana (NBA, 3:30 p.m.) and Dallas vs. Las Vegas (ESPN2, 6 p.m.).

Final rounds are played in the St. Jude Invitational (Golf, 1 p.m.; CBS, 3 p.m.).

Auto racing has the British Grand Prix (ESPN, 9 a.m.) and the Foxwoods Resort Casino 301 (NBC Sports, 3 p.m.). 

The World Team Tennis final has New York at Chicago (CBS, noon). 

Sunday Talk

ABC: House Speaker Nancy Pelosi, Treasury Secretary Steven Mnuchin. CBS: White House chief of staff Mark Meadows, Rep. James Clyburn, former FDA commissioner Scott Gottlieb, CEO of the Federal Reserve Bank of Minneapolis Neel Kashkari, CEO of the Leadership Conference on Civil and Human Rights Vanita Gupta. NBC: Assistant secretary of health Adm, Brett Giroir, Dr. Nahid Bhadelia of Boston University, Rep. Karen Bass. CNN: Clyburn, Arkansas Gov. Asa Hutchinson, Dr. Deborah Birx, Stacey Abrams. Fox News: Sen. Tammy Duckworth, Bass, Trump campaign adviser Jason Miller.