Archie and the gang return in the season-three premiere of “Riverdale” while “Nova: Volcano on Fire” explores Mount Nyiragongo, one of the most dangerous volcanoes in the world.

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“All American”

Premiere of fictional drama based on the real-life story of former NFL player Spencer Paysinger; Beverly Hills high-school-football coach Billy Baker (Taye Diggs) invites Spencer James (Daniel Ezra), a talented player from a rough neighborhood, to move in with him and play on his team, forcing Spencer to navigate two worlds; 9 p.m. Wednesday on KSTW.

Also on Wednesday

“Riverdale,” 8 p.m. (KSTW): Season-three premiere; Archie makes a surprising request about how he wants to spend his final days of summer; Betty must deal with her problems head-on after a heated confrontation with Alice and Polly; Veronica pleads with Hiram to help Archie.

“Empire,” 8 p.m. (KCPQ): Cookie and Lucious push to get back in the music game; Andre finds a risky way to make a name for himself among his fellow inmates.

“Survivor,” 8 p.m. (KIRO): The castaways’ drama continues with this season’s “David and Goliath” theme.

“Nova: Volcano On Fire,” 9 p.m. (KCTS): Two-hour examination of Mount Nyiragongo in the Democratic Republic of the Congo, one of the most active and dangerous volcanoes in the world, to learn more about what triggers activity.

“Modern Family,” 9 p.m. (KOMO): Phil stumbles into a new career after visiting Luke’s college; Claire deals with her dad and the merger of Pritchett’s Closets with a tech-savvy, hipper company; Mitch’s high-profile case is marred by an unflattering courtroom sketch.

“Chicago Fire,” 9 p.m. (KING): Severide investigates a victim’s motives after rescuing him and his child from a car accident; Mouch reaches out to a fellow firefighter; Cruz discovers he has a new admirer.

“Star,” 9 p.m. (KCPQ): Cassie embarks on a new venture with a businessman that interferes with Carlotta’s work; Alex helps a fan start a music career.

“Criminal Minds,” 10 p.m. (KIRO): The team tracks a serial killer when remains of numerous victims are found in the walls of an elderly couple’s home; the hunt becomes urgent after the BAU learns the killer’s specific ritual of when to strike; Rossi re-connects with an ex-wife.

Madeline McKenzie: Program times may vary depending on your cable provider or service.