There probably couldn’t be a better time to introduce yet another new documentary series involving a sinisterly powerful family in South Carolina’s Low Country. “Murdaugh Murders: A Southern Scandal” (Netflix, streaming) has another advantage: full cooperation of the young people who survived the deadly boat crash by the young Murdaugh that begins the complicated tale that leads to four other mysterious deaths. There’s only three episodes to the series and no ending, since a murder trial of an elder Murdaugh is ongoing now (and showing liv daily on Court TV). 

In the new series “The Low Tone Club” (Disney+, streaming), Carlos Vives stars as a teacher who coaches a student quintet of singers.

From Turkey comes “10 Days of a Good Men” (Netflix, streaming) a film about a lawyer turned private investigator who takes on a missing person case that changes him. 

The sixth and final season of the drug drama “Snowfall” (FX, 10 p.m.) begins with a pair of episodes. 

The special “Voices Rising: The Music of ‘Wakanda Forever’” (Disney+, streaming) concentrates on the contributions of Rihanna, Buena Boy, Tems and Stormzy.

Less well known civil rights warriors are given the spotlight in “Can’t Turn Us around: Alabama’s Foot Soldiers” (History, 7 p.m.). 

The new series “Island of the Monsoon” (Smithsonian, 8 p.m.) begins with a look at leopards in Sri Lanka.         

The comedy “The Ms. Pat Show” (BET, 10 and 10:30 p.m.) begins a third season.