TV and streaming picks for Thursday, Feb. 18

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“grown-ish” (8 p.m., Freeform): Zoey returns home for a long weekend but is surprised to find things around the house and Cal U has seemed to move on without her. Meanwhile, Jazz and Doug’s relationship continues to get more complicated when Jazz returns from the NCAA track finals with some very surprising news.

“Last Man Standing” (9:30 p.m., Fox): When Ed pits Mike and Joe against each other to find the next classic car for renovation, Chuck teaches them a valuable lesson. Meanwhile, Mandy, Kyle and Vanessa meddle in Jen’s love life.

“The Widower” (10 p.m., NBC): This three-part true-crime series takes viewers behind the scenes of a decade-long investigation into Thomas Randolph, an eccentric Las Vegas man accused of killing his wife Sharon. With hundreds of hours of exclusive footage, “Dateline NBC” producer Dan Slepian captures the confounding murder investigation that soon reveals Sharon was Randolph’s sixth wife — and the fourth to die under mysterious circumstances. Over the course of 10 years, Slepian travels across the country, interviewing and documenting in real time the alleged killer as he tantalizes law enforcement, the legal team and even the “Dateline” cameras in a twisted game of cat and mouse.

“Clarice” (10 p.m., CBS): Clarice Starling and the VICAP team are deployed to Tennessee where the FBI is laying siege against a fringe militia group called “The Statesmen.”

“It’s a Sin” (HBO Max): Set in 1981, this five-part limited series follows Ritchie (Olly Alexander), Roscoe (Omari Douglas) and Colin (Callum Scott Howells), who are strangers at first as they leave home at 18 and head off to London with hope and ambition and joy… and walking straight into a virus that most of the world ignores. Year by year, episode by episode, crossing the whole decade, their lives change as the mystery of that illness starts as a rumor, then a threat, then a terror, and then something that binds them together in the fight.

Also on Thursday:

“Walker” (8 p.m., The CW)

“Mr. Mayor” (8 p.m., NBC)

“Young Sheldon” (8 p.m., CBS)

“Hell’s Kitchen” (8 p.m., Fox)

“Celebrity Wheel of Fortune” (8 p.m., ABC)

“Flipping Across America” (8 p.m., HGTV)

“Superstore” (8:30 p.m., NBC)

“B Positive” (8:30 p.m., CBS)

“Call Me Kat” (9 p.m., Fox)

“Legacies” (9 p.m., The CW)

“Mom” (9 p.m., CBS)

“Law & Order: SVU” (9 p.m., NBC)

“The Chase” (9 p.m., ABC)

“Go Big Show” (9 p.m., TBS)

“The Unicorn” (9:30 p.m., CBS)

“The Hustler” (10 p.m., ABC)

“Killer Cases” (10 p.m., A&E)