Tuesday’s TV highlights

SERIES

Explorer: This new installment spotlights efforts to end discrimination against albinos in Tanzania (7 and 10 p.m. National Geographic).

America’s Got Talent: Semifinalists shoot for a spot in the top 10 in this new episode of the competition (9 p.m. NBC).

HawthoRNe: The hospital drama starring Jada Pinkett-Smith presents its second-season finale (9 p.m. TNT).

Shaq VS: The basketball player goes golfing with former NBA great Charles Barkley in this new episode (9 p.m. ABC).

Growing Up Twisted: This series featuring Twisted Sister frontman Dee Snider and his family ends its season (10 p.m. A&E).

The Colony: One of the colonists is abducted in this new episode of the reality series (10 p.m. Discovery).

Memphis Beat: This Southern-style cop drama starring Jason Lee ends its freshman season (10 p.m. TNT).

Louie: He’s been to the doctor and his therapist in past episodes, and now our hero is off to see the dentist in this new installment of the Louis C.K. comedy series (11 p.m. FX).

SPECIALS

If God Is Willing and Da Creek Don’t Rise: Spike Lee’s two-part look at New Orleans five years after Hurricane Katrina concludes (9 p.m. HBO).

MOVIES

Redbelt: Chiwetel Ejiofor stars in writer-director David Mamet’s two-fisted 2008 drama; Tim Allen and Max Martini also star (8 p.m. KDOC).

Flesh and the Devil: TCM’s salute to John Gilbert includes the actor opposite real-life paramour Greta Garbo in this silent 1927 melodrama (9 p.m.).

SPORTS

Baseball: The Cubs challenge the Nationals (4 p.m. WGN America); the Dodgers battle the Brewers (5 p.m. KCAL); the Twins take on the Rangers or the Braves face the Rockies (5 p.m. MLB); and the Angels host the Rays (7 p.m. MyNet).