Summer DreamsCBS continues its effort of presenting a Saturday night feature documentary, this one on the eve of March Madness. “Summer Dreams” (CBS, 8 p.m.) follows four rookie players at the NBA Summer League in Las Vegas last summer, spotlighting Lauren Holtkamp as she attempts to become the third-ever full=time referee and second current ref in the NBA. It accompanies another episode of “48 Hours” (CBS, 10 p.m.),  involving two 30-year-old murder cases.

Mostly, though the old school newsmagazine start to pile up on Saturday nights just as do on the coffee table. The newest is “Nightline Prime” (ABC, 9 p.m.), the first pre-midnight appearance of the show in a while. It precedes a “20/20” (ABC, 10 p.m.) about the kidnapping of a baby 50 years ago.On  And a father of three succumbs to death by antifreeze on a two hour “Dateline” (NBC, 8 p.m.).

How did we become so interested in zombies? Alexandre O. Philippe’s  documentary “Doc of the Dead” (Epix, 8 p.m.) hopes to answer that. It’s sandwiched by two zombie flicks itself, the original “Night of the Living Dead” 6:15 p.m.) and “World War Z” (Epix, 9:30 p.m.).

The TV movie “The Grim Sleeper” (Lifetime, 8 p.m.) Dreama Walker stars as a reporter who connects some murders from the 1980s to those in the 60s. Dreama Walker stars. Also in the cast: Ernie Hudson and Macy Gray. As is custom on the network lately, the details of the story on which it is based follows, “Beyond the Headlines: The Real Grim Sleeper” (Lifetime, 10 p.m.).

Baz Luhrmann’s dizzying version of “The Great Gatsby” (HBO, 8 p.m.) makes its way to premium cable, in 2-D.Also on: last year’s “The Conjuring” (Cinemax, 10 p.m.) with Vera Farmiga and Patrick Wilson as the husband and wife paranormal investigators Ed and Lorraine Warren from Connecticut.

In the first season finale of “Black Sails” (Starz, 9 p.m.), the hunt for the Urca begins.

An Irish bomber escapes a paddy wagon on “Ripper Street” (BBC America, 9 p.m.) in its apparent St. Patrick’s Day episode.

A son’s interest in music over football is not in “Deion’s Family Playbook” (OWN, 10 p.m.).

The first episode of the new “Cosmos” (Fox, 8 p.m.) is rerun before Sunday’s second installment.

Those dismayed at seeing Goldie Hawn at the Oscars can enjoy her in better days in the films “The Sugarland Express” (TCM, 8 p.m.), “Butterflies are Free” (TCM, 10 p.m.) and “Shampoo” (TCM, midnight).

Men’s basketball tournament action inclues Albany vs. Stony Brook (ESPN2, 11:30 p.m.) in the America East championship., Tulsa vs. Louisiana Tech (CBS, 11:30 a.m.) in th Conference USA championship, Pittsburgh vs. Virginia (ESPN, 1 p.m.) in the ACC semifinal, Tennessee vs. Florida (ABC, 1 p.m.) in the SEC semifinal, St. Bonaventure vs. St. Joseph’s (CBS Sports Network, 1:30 p.m.) in the Atlantic 10 semifinal, Ohio State vs. Michigan (CBS, 1:40 p.m.) in the Big Ten semifinal, North Carolina State vs. Duke (ESPN, 3:30 p.m.) in the ACC semifinal, Kentucky vs. Georgia (ABC, 3:30 p.m.) in the SEC semifinal,VCU vs. George Washington (CBS Sports, 4 p.m.) in the Atlantic 10 semifinal, Wisconsin vs. Michigan State (CBS, 4 p.m.) in the Big Ten semifinal, Texas Southern vs. Prairie View A&M (ESPN2, 4:30 p.m.) in the SWAC championship, San Diego State vs. New Mexico (CBS, 6 P.m.) in the Mountain West championship, Louisville vs. Connecticut (ESPN, 6 p.m.) in the ACC championship, Arizona vs. UCLA (Fox Sports 1, 6 p.m.) in the Pacific 12 championship, Western Michigan vs. Toledo (ESPN2, 6:30 p.m.) in the MAC championship, SF Austin vs. Sam Houston (ESPN2, 8:30 p.m.) in the Southland championship, Providence vs. Creighton (Fox Sports 1, 8:30 p.m.), Iowa State vs. Baylor (ESPN, 9 p.m.) in the Big 12 championship and Cal Poly vs. Cal State Northridge (ESPN2, 10:30 p.m.) in the Big West championship.

Women’s championship games include Middle Tennessee vs. Southern Mississippi (CBS Sports, 8 p.m.) in the Convernce USA  and Colorado State vs. Fresno State (CBS Sports, 10 p.m.) in the Mountain West.

Hockey adction includes Pittsburgh at Philadelphia (NHL, 1 p.m.) and Ottawa at Montreal (NHL, 7 p.m.). In the NBA,  Denver at Atlanta (NBA, 7:30 p.m.).

Spring baseball includes Yankees vs. Orioles (MLB, 1 p.m.), Brewers vs. Reds (MLB, 4 p.m.), Phillies vs. Red Sox (MLB, 7 p.m.) and Dodgers vs. White Sox (MLB, 10 p.m.).

Florence + The Machine star in a replay of “Austin City Limits” (PBS, 9 p.m.).

Tonight’s “Saturday Night Live” (NBC, 11:30 p.m.) is a repeat of the one where Drake hosted and performed.