“The No. 1 Ladies’ Detective Agency” (9 p.m., HBO): Precious goes undercover when

“The No. 1 Ladies’ Detective Agency” (9 p.m., HBO): Precious goes undercover when a man is suspected of poisoning his family.

“Tracey Ullman’s State of the Union” (10 p.m., Showtime): Tracey Ullman is back with a new array of characters for the second season of “Tracey Ullman’s State of the Union.” She’ll be doing her own spin on Renee Zellweger, Seth Rogan, Laura Bush and J.K. Rowling. Ullman also has an arsenal of characters she’s created especially for the sketch show. Among them is Padma Perkesh, an East Indian pharmacist working in Oak Ridge, Tenn. Ullman doesn’t profess to know much about Oak Ridge. “We just loved the name,” Ullman says. As Padma, she advises customers before breaking out into a Bollywood production number. She had considered not bringing the character back for the second season, but had second thoughts. “I had so much fun with her,” she says. “I love the singing and dancing of it. I couldn’t let it go.”