Best Bets on TV

“A Small Act” (9 p.m., HBO): “A Small Act” is an inspiring documentary that tells how Swedish schoolteacher Hilde Black began donating $15 a month to help sponsor young Kenyan student Chris Mburu. Her humble gift ultimately helped to deliver Mburu out of poverty and into Harvard Law School. He went on to become a United Nations human-rights advocate.

“The Closer” (9 p.m., TNT): The Season 6 opener of basic cable’s most-popular drama finds Brenda (Kyra Sedgwick) in a cranky mood. She and her team of LAPD detectives have just moved into their brand new high-tech headquarters, but all the gadgets and gizmos are proving to be a major hassle. Meanwhile, there’s an internal struggle brewing over who will become the next police chief and, oh yes, a few murders to solve.

“Rizzoli & Isles” (10 p.m., TNT): Angie Harmon returns to series television in “Rizzoli & Isles.” She plays a hard-nosed detective who teams with her best friend and medical examiner (Sasha Alexander) to solve crimes. First up: the grisly slaying of a wealthy couple.

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