The French filmmaker Jean-Xavier de Lestrade shook of the world of true crime documentaries with his saga of a North Carolina murder case,  “The Staircase,” is back with another series, “Laetitia” (HBO, 9 p.m.), based on a famous 2011 French murder of an 18-year old, and the effect of the investigation on the victim’s twin sister. 

Tennis’ big event The U.S. Open (ESPN, ESPN2, 11 a.m.) begins for two weeks of play at the USTA Billie Jean King National Tennis Center in Queens.

A new film on “POV” (PBS, 10 p.m., check local listings) follows an indigenous painter from Peru who mines the stories of his ancestors. 

The new series “Prisoner of Love” (Discovery+, streaming) follows a woman who tries to be a matchmaker between prisoners and those outside of bars.

The gripping and heartbreaking “9/11: One Day in America” (National Geographic, 9 p.m.) returns for its second night,as those in the south tower make plans to escape before its collapse. 

Two more men arrive and women have to decide who to keep around on “Bachelor in Paradise” (ABC, 8 p.m.).

“American Ninja Warrior” (NBC, 8 p.m.) begins its national finals in Las Vegas. 

Chefs try to prove to be worthy of a black jacket on “Hell’s Kitchen” (Fox, 8 p.m.).

“My Life is Murder” (Acorn TV, streaming), the detective series starring Lucy Lawless, returns for its second season, moving from being set in Melbourne, Australia to New Zealand.