Also airing: It’s opening night at Stanton High on “Rise” and secrets of Viking Age fortresses on “Unearthed.”

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“NCIS: New Orleans”

Season-four finale of the third series in the “NCIS” franchise, renewed for next season; Pride assembles an off-the-books team to search for a loophole when he faces a grand jury indictment for abuse of power; Pride’s teams uncover a sinister plot during the New Orleans Tricentennial Fleet Week celebration; 9 p.m. Tuesday on KIRO.

Also on Tuesday

“The Flash,” 8 p.m. (KSTW): DeVoe assaults an A.R.G.U.S. facility to complete his Enlightenment Machine; Barry is reluctant to risk his friends’ lives and considers taking on DeVoe solo.

“Black-ish,” 9 p.m. (KOMO): Season-four finale, series not officially renewed but considered likely to be; Dre and Bow realize how much they relied on each other and how hard it is being on their own; Bow doesn’t think Dre’s new house is suitable for the kids.

“Rise,” 9 p.m. (KING): Season-one finale, series renewal uncertain; it’s finally opening night of Stanton High’s production of “Spring Awakening,” but personal crises and dilemmas abound backstage.

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“New Girl,” 9 p.m. (KCPQ): Series finale; Jess and Nick make life-changing decisions; Winston and Aly’s big day arrives; the gang takes a trip down memory lane.

“Unearthed,” 9:08 p.m. (SCIENCE): Season-three premiere; combining science and CGI animation, archaeologists in Denmark uncover secrets of the lost fortresses of the Viking Age.

“Chicago Med,” 10 p.m. (KING): Season-three finale, series renewed for next season; Dr. Rhodes questions removing himself from the team working to separate conjoined twins; Dr. Charles uncovers troubling information about Dr. Reese’s father.

“Royal Wedding Watch,” 10 p.m. (KCTS): Historian Lucy Worsley discusses dresses chosen by previous royal brides; how protocol and etiquette influence royal style.

“Genius: Picasso,” 10 p.m. (NATGEO): Pablo Picasso tries to persuade Françoise Gilot to move in with him; young Picasso is challenged by the radical genius of Matisse.

Madeline McKenzie: mmckenzie@seattletimes.com. Program times may vary depending on your cable provider or service.