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Nightline Prime The late night newsmagazine debuts in prime time. 9 p.m. ABC
When Calls the Heart Abigail (Lori Loughlin) learns more about Gowen's (Martin Cummins) dangerous behavior leading up to the mine disaster in this new episode. 9 p.m. Hallmark
Black Sails As the hunt for the Urca gets under way, big changes are in store for Eleanor (Hannah New), while Bonny and Rackham (Clara Paget, Toby Schmitz) find their past misdeeds coming back to haunt them in the season finale. 9 and 10 p.m. Starz
Deion's Family Playbook Deion Sanders worries that Shilo's pursuit of music is interfering with his football playing in this new episode. 10 p.m. OWNSPECIALS
Summer Dreams This new documentary takes viewers behind the scenes of the NBA's Summer League, an annual exhibition event where rookies and unsigned players show coaches and team managers what they can do. 8 p.m. CBSMOVIES
Zombie Marathon The Epix premium channel is holding a mini-marathon dedicated to the sub-genre that started with 1968's "Night of the Living Dead" (6:15 and 11:30 p.m.). That's followed at 8 by "Doc of the Dead," a new documentary by filmmaker Alexandre O. Philippe. Then, at 9:30, Brad Pitt stars in 2013's "World War Z."
The Great Gatsby The classic F. Scott Fitzgerald story gets a typically rule-breaking revision from director Baz Luhrmann in a 2013 version with Leonardo DiCaprio as the wealthy 1920s recluse. Tobey Maguire, Carey Mulligan, Joel Edgerton, Isla Fisher and Jason Clarke also star. 8 p.m. HBO
The Grim Sleeper Based on a true story, this new docudrama stars Dreama Walker as a Los Angeles reporter who connects the dots in dozens of unsolved murders and determines they're the work of one killer. 8 p.m. Lifetime. The new special "Beyond the Headlines: The Real Grim Sleeper" follows at 10.
Good Morning America (N) 7 a.m. KABC
McLaughlin Group (N) 6:30 p.m. KCETSUNDAY