1) “House of the Dragon” debut, 9 p.m., HBO, rerunning at 10:10. This is the big one – or one of two big ones. Years in the making, there are epic prequels to “Lord of the Rings” (Sept. 2 on Amazon) and, first, “Game of Thrones.” HBO reportedly spent $200 million on this 10-episode season, set almost 200 years before “Thrones.” Paddy Considine (shown here) plays the king, with Emma D’Arcy (and, in the early years, Milly Alcock) as the dragon-riding princess.
2) Sports overload. Pick your sport. There’s football; at 8 p.m. ET, Fox has a pre-season game with Arizona (11-6 last season) hosting Baltimore (8-9). And baseball; at 7, ESPN has the Orioles hosting the Red Sox And gymnastics; NBC has the U.S. championships at 12:30 p.m. and then the women’s finals at 8.
3) “Celebrity Family Feud,” 8 p.m., ABC. The “Shark Tank” folks may be cunning with money, but how are they at guessing people’s responses? We’ll sea, as they face people from CBS’ “The Talk”; the second game has Natasha Leggero against Lauren Ash. New episodes of “The $100,000 Pyramid” and “The Final Straw” follow.
4) “Tales of the Walking Dead,” 9 p.m., AMC. This is the second of six separate hours, glimpsing monents in the zombie apocalypse. The first one reruns at 10:02; this one has Jillian Bell and Parker Posey as a disgruntled receptionist and her overbearing boss, trapped together.
5) “The Killer Nanny: Did She Do It?” 9 p.m. to midnight, Investigation Discovery; also Discovery+. In 1997, Louise Woodward, 18, moved from England to Newton, Mass., to be an au pair. One night, she phoned 9-1-1 and said the baby was unresponsive. Her trial was followed intensely, especially in England … where people have pointed out that she passed a lie-detector and that there are new views on the possible causes of infant mortality.