To kick off a generally underwhelming night of television, the two-night miniseries “Labyrinth” (CW at 8 p.m.) concludes with, hopefully, the labyrinth back to its original, untouched state.

Presented as one of Keith Morrison’s favorite investigative reports, “Dateline NBC” (NBC at 8) looks into a case of a 19-year-old Colorado woman who goes out for the evening but never returns. Then, weeks later, another woman is found nearly murdered in her apartment.

In case you missed it Thursday night, the premiere of the crime drama “Gang Related” (Fox at 9) airs again, with Ramon Rodriguez playing an ex-gang member who’s now a detective in Los Angeles’s elite Gang Task Force.

RETURNING SHOW: One of the TV world’s most stressful shows, “What Would You Do?” (ABC at 9), returns for a ninth season with hidden cameras capturing obvious racial profiling, an athlete coming out to his teammates and a person eating other people’s food at a restaurant.

“Say Yes to the Dress” (TLC at 9) helps a few songstresses out with American country music artist Whitney Duncan finding her dream dress, along with a rocker and a songwriter finding the gowns of their dreams.

FINALE WATCH: In an exciting turn of the night, expect a cruel and gruesome “Hannibal” (NBC at 10) Season 2 closer when Will tries to tie up loose ends as he wonders whether he’ll survive the trap he set for Hannibal.

“Diners, Drive-Ins and Dives” (Food at 10) heads to Hawaii, where Guy Fieri tries lechon special, red curry fish, ahi cakes and more.

“Real Time With Bill Maher” (HBO at 10) hosts a roundtable with journalist Jose Antonio Vargas, comedian Sarah Silverman, journalist David Frum, TV host Michael Smerconish and playwright Anna Dea­vere Smith.

A repeat “Blue Bloods” (CBS at 10) has a little girl being kidnapped, but then her parents deny that she was abducted.

“Vice” (HBO at 11) investigates the Fukushima nuclear disaster and talks to U.S. military veterans who are struggling with mental illness and addiction.

Comic actor Seth MacFarlane and actress Thandie Newton are on “The Tonight Show Starring Jimmy Fallon” (NBC at 11:35), with musical guest Rascal Flatts.

Actress Lindsay Lohan and 13-year-old amateur nuclear scientist Jamie Edwards come to the “Late Show With David Letterman” (CBS at 11:35), along with a musical performance from Real Estate.

Rachel Lubitz