AMERICAN HORROR STORY: COVEN: Cordelia makes a sacrifice that changes everything. (Michele K. Short/FX)

RETURNING SHOW: “American Idol” (Fox at 8 p.m.) returns for its 13th season with preliminary auditions in Boston and Austin and a two-hour premiere. After complaints about last season’s judging panel, Jennifer Lopez is back and Harry Connick Jr. joins the show with country star Keith Urban rounding out the panel. Changes this year include the infamous sequences of hilariously bad performances reduced to a minimum, and contestants are allowed to audition with musical instruments.

RETURNING SHOW: In its third season premiere, “Suburgatory” (ABC at 8:30) is all about dogs with George adopting one in an attempt to rebuild his relationship with Tessa, and Sheila tracks a canine on the loose in Chatswin.

A high school open house causes Claire to have a stress-induced freak-out on “Modern Family” (ABC at 9), while Gloria faces a bully and Mitchell faces a nemesis.

Amaro wounds a suspected teenage drug dealer on “Law & Order: Special Victims Unit” (NBC at 9) and a media firestorm begins. While he thinks about his future and possible firing from the unit, Cragen makes a shocking announcement.

A startling death on “Nashville” (ABC at 10) unleashes a family secret. Meanwhile, Gunnar and Scarlett get a remarkable offer from Kelly Clarkson, and Juliette’s image continues to decline.

After it’s believed that Antonio’s son has been kidnapped by members of a Colombian drug gang on “Chicago PD” (NBC at 10), the unit mobilizes to save him, and Halstead gains more information about Lindsay.

Cordelia makes a game-changing sacrifice on “American Horror Story: Coven” (FX at 10), while Fiona and a born-again Marie Laveau face off with the Corporation.

“My Strange Addiction” (TLC at 10) introduces us to a 22-year-old woman who chews on urine-soaked diapers and a 50-year-old man who regularly uses leeches.

SERIES PREMIERE: Reality series “Crazy Hearts: Nashville” (A&E at 11) follows musicians trying to make it in country music. The show moves to 10 p.m. Thursdays starting this week.

Comedian Kevin Hart is on the “Late Show With David Letterman” (CBS at 11:35), with a musical performance from the Orwells.

Actress Vanessa Hudgens and American businessman Mark Cuban come to “The Tonight Show With Jay Leno” (NBC at 11:35), with musical guest Foreigner.

Actors Joseph Gordon-Levitt and Kenneth Branagh stop by “Jimmy Kimmel Live” (ABC at 11:35), with music from Michael Kiwanuka.

— Rachel Lubitz