william-petersen-marg-helgenberger-csiFall is the time for big premieres; finales are usually set in spring. But tonight, to cap the initial premiere week of the broadcast networks, here’s the two hour finale of “CSI: Crime Scene Investigation” (CBS, 8 p.m.).

When it premiered 15 years ago, its approach and razzle dazzle computer effects changed broadcast procedurals forever, for better or worse. It went on to spawn revolving casts and three other spinoffs. “CSI: Miami” and “CSI: New York” are gone, but “CSI: Cyber” continues.

For the original’s send-off, original cast members William Petersen and Marg Helgenberger return to wrap things up.

On an extraordinary episode of “Vice” (HBO, 9 p.m.), Shane Smith gets President Obama to visit a federal prison in Oklahoma to meet with a half dozen prisoners — the first time a sitting President has ever done so. It’s all a part of an effort to shed light on prison reform in a country that leads the world in locking up its citizens for long sentences, often for frivolous drug charges. It’s almost too big a problem to tackle in just one hour, but some ground is made.

With all its “Downton Abbey” money, “Masterpiece” (PBS, 9 p.m., check local listings) is spending lavishly on new period series. The new “Indian Summer” is a multi-caste look at british imperialists summering in the mountains near. It’s full of color and a diverse cast, but the initial episode, at least, is kind of a mess.

“Once Upon a Time” (ABC, 8 p.m.) returns for its fifth season, with King Arthur popping up in the Enchanted Forest as Emma searches for Merlin. It’s preceded by something called “Dark Swan Rises: ‘Once Upon a Time’ Fan Celebration” (ABC, 7 p.m.).

Lena Dunham provides a voice in the 27th season return of “The Simpsons” (Fox, 8 p.m.), which is part of premieres for all its other Sunday comedies, the animated “Bob’s Burgers” (Fox, 7:30 p.m.) and  “Family Guy” (9 p.m.) and the live action “Brooklyn Nine-Nine” (Fox, 9:30 p.m.) and “Last Man on Earth” (Fox, 9:30 p.m.).

President Obama is to talk to Vladimir Putin Monday. But tonight, on the season premiere of “60 Minutes” (CBS, 7:30 p.m.) Charlie Rose talks to Putin first.

Sunday Night Football has Denver at Detroit (NBC, 8:30 p.m.). Earlier games include Atlanta at Dallas (Fox, 1 p.m.), Cincinnati at Baltimore (CBS, 1 p.m.) and Chicago at Seattle (CBS, 4:25 p.m.).

This nature film has a title like something out of Cannibal & the Headhunters: “Land of 10,000 Grizzlies” (Nat Geo Wild, 8 p.m.).

After “Anne Frank’s Holocaust” (National Geographic, 8 p.m.) comes “Hitler’s Death Squad” (National Geographic, 9 p.m.).

Ray learns the truth about Bridget on season finale of “Ray Donovan” (Showtime, 9 p.m.). “Masters of Sex” (Showtime, 10 p.m.) has its own season finale.

When it comes to kings and tutors, “Anna and the King of Siam” (TCM, 8 p.m.) comes to mind, but there is also “The Swan” (TCM, 10:15 p.m.).

There are a pair of silent Lon Chaney sad clown films, “He Who Gets Slapped” (TCM, 12:15 a.m.) and “Laugh, Clown, Laugh” (TCM, 1:30 a.m.).

Baseball includes Texas at Houston (TBS, 2 p.m.) and Pittsburgh at Cubs (ESPN, 8 p.m.).

In the WNBA conference finals, it’s New York at Indiana (ESPN, 1 p.m.) and Minnesota at Phoenix (ESPN, 3 p.m.).

The final round comes in the PGA Tour Championship (Golf, noon; NBC, 1:30 p.m.).

Sunday Talk

ABC: Ben Carson, U.S. Ambassador to the United Nations Samantha Power, Rep. Devin Nunes, Newt Gingrich. CBS: Rep. John Boehner, Bernie Sanders, Gov. John Kasich. NBC: Hillary Rodham Clinton, Carly Fiorina. CNN: Carson, Martin O’Malley, Rep. Nancy Pelosi, Philadelphia Mayor Michael Nutter. Fox News: Jeb Bush, Reps. Tom Cole and Mick Mulvaney.