NBC is offering two previews of its new one-hour drama series, which will eventually settle into its 9-10 p.m. slot on Saturdays, in what may be a comfortable berth just preceding "Sisters." With Cicely Tyson and Melissa Gilbert as two barristers in a small Southern town, "Sweet Justice" opens with a sentimental mother-child meller; the magnolia folks are jim dandy, but Gilbert seems to be surface playing.
Jones & Jury
(Mon. (12), 5:30-6 p.m., KCAL)
Taped in Hollywood by Lighthearted Entertainment in association with Group W Prods. Executive producer, Howard Schultz; supervising producer, Robin Sestero; coordinating producer, George David Monas; producers, Brenda Dillon, Ed Leon, Lisa Tatum, Robin Allison Smalley; director, Jerry Kupcinet.
Host: Star Jones.