Arts and Entertainment

A third season of cold case investigations and emotional roller coasters in “Unforgotten” airs Saturdays at 9 p.m., beginning Sept. 14 on Arizona PBS.

Host and producer Henry Louis Gates, Jr. takes you on a two-part, four-hour journey through one of America’s most controversial-yet-least-understood historical periods.

Celebrity chef Christine Cushing travels the world in search of knowledge and deliciousness for all things Chinese in “Confucius Was a Foodie,” an eight-part series Friday nights at 9 p.m.

Judge Michael Mukasey and Nadine Strossen have a conversation that models a civil, mutually respectful and vigorous exchange of ideas on issues that challenge American society.

Ken Burns’ enlightening and controversial film, “The Central Park Five,” returns to Arizona PBS on April 2 at 8 p.m.

The wildly successful “Call the Midwife” series begins its eighth season with new drama, comedy and uplifting tales every Sunday night at 7 p.m. through May 19.

The sixth installment of “Polarization: A Civic Crisis” features American Enterprise Institute (AEI) president Arthur Brooks, who draws on history, social psychology, behavioral economics and the counsel of ancient wisdom to address the divisions that plague America.

“Silent Witness” is back with more crimes, detectives, forensics and mystery. Tune in Sundays at 10 p.m., beginning March 24, on Arizona PBS.

From his charitable work to his family life, see Britain’s longest-serving heir to the throne as never before on Sunday, March 24, at 7 p.m.

On Sunday, March 24, at 2 p.m., celebrate the life of Swedish soprano Birgit Nilsson, the face of opera from the 1950s-70s.