Turner Classic Movies’ two-month long Saturday night “Follow the Thread” fashion series concludes with a good one: Paul Thomas Anderson’s 2017 “Phantom Thread” (8 p.m.) with Daniel Day Lewis, paired with “Falbalas” (10:15 p.m.). 

Shark Week concludes with “Monsters of the Cape” (Discovery, 8 p.m.), “Sharks in Paradise” (Discovery, 9 p.m.). 

A marine mammalology student pairs up with a whale watch tour guide in the Pacific Northwest in the made-for-TV romance “A Splash of Love” (Hallmark, 8 p.m.), starring Rhiannon Fish and Ben Hollingsworth. 

“Flowers in the Attic: The Origin: Part 4: The Martyr” (Lifetime, 8 p.m.) wraps up this summer’s series of prequels. 

The 2015 “Furious 7” (NBC, 8 p.m.) in prime time tells us there isn’t much on tonight. 

“First Blood” (A&E, 9 p.m.) looks into the case of California co-ed killer Ed Kemper. 

The reunion continues on “Love & Marriage: D.C.” (OWN, 9 p.m.). 

On “Black Love” (OWN, 10 p.m.), couples explain how they overcame barriers to commitment. 

The Yuma Territorial Prison in Arizona is visited on “Ghost Brothers: Lights Out” (Travel, 10 p.m.).