1) “Almost Family” debut, 9:01 p.m., Fox. For the first eight minutes, this seems like a pretty good romantic comedy. Julia (Brittany Snow, shown here) is an amiable redhead, racing (via bike) between a dating hook-up and a tribute for her dad. Then, suddenly, her world collapses. This is one of those rare shows that leaps between two kinds of drama – one gentle, the other packed with rage – plus comedy. It pulls it off, thanks to good writing and great acting, especially from Snow, Tim Hutton and Emily Osment.
2) “Nature” season-opener, 8 p.m., PBS. The octopus keeps surprising us. It has eight legs, three hearts, blue blood, and maybe a sweer soul. At least, that’s what David Scheel and his teen daughter found, keeping one named Heidi in their living room. Scheel (a marine biology professor in Alaska) narrates this appealing hour, which ranges from warm moments at home to informative looks at octo-research.
3) “iHeartRadio Music Festival,” 8-10 p.m., CW. Four days before its season starts, the CW begins a two-night, four-hour concert. Tonight (subject to change) has Camila Cabello, Tim McGraw, Halsey, French Montana, Steve Aoki and more.
4) “SEAL Team” and “S.W.A.T.” season-openers, 9 and 10 p.m., CBS. These shows make a logical combination. Each is a macho, military tale with a neatly chiseled hero (first David Boreanaz, then Shemar Moore); and each has a human core. This “SEAL” episode was filmed in Serbia, with the team tracking a group linked to bombing U.S. military outposts. “S.W.A.T” has a bomber using drones. A senior officer (Amy Farrington) arrives and Hondo meets his estranged dad.
5) “All Elite Wrestling” debut, 8 p.m., TNT. This is the week when wrestlers storm our TV sets. On Tueday, the AXS channel debuted “Impact”; on Friday, WWE’s “SmackDown” moves to Fox. In between is this new federation, which includes Chris Jericho and other established stars.