For the fourth time since her memorably successful series (1970-1979), Mary Tyler Moore gives the weekly grind another try with a new drama premiering tonight. Dueling network news shows also analyze the O. J. trial, and the A&E; Network sings the blues.
* "Murder, She Wrote" (8 p.m.-9 p.m., WJZ, Channel 13) Wayne Rogers returns in another guest appearance as insurance investigator Charlie Garrett, looking into the death of a man in a car crash that also interests Jessica (Angela Lansbury). Also in the guest cast are TV veterans Gerald McRaney ("Major Dad") and Leigh Taylor-Young ("Peyton Place"). CBS.
* "New York News" (9 p.m.-10 p.m., WJZ, Channel 13) Ms. Moore plays the tough editor-in-chief of a Manhattan daily newspaper. Do you remember that in her last attempt at a series -- "Mary," in 1985 -- she played a reporter on a Chicago newspaper? Also in the cast: Joe Morton, Madeline Kahn and Gregory Harrison. CBS.
* "New York Undercover" (9 p.m.-10 p.m. WBFF, Channel 45) In a plot right from the news headlines about computer corruption, Lieutenant Cooper (Patti D'Arbanville-Quinn) searches for her teen daughter, who disappears after communicating on the Internet with a mystery man. Fox.
* "Seinfeld" (9 p.m.-9:30 p.m., WBAL, Channel 11) Now that he's engaged, George (Jason Alexander) tries desperately to think of ways to postpone the wedding, while Elaine (Julia Louis-Dreyfus) confides unwisely in a talkative rabbi (Bruce Mahler). NBC.
* "Into the Jury's Hands" (10 p.m.-11 p.m., WMAR, Channel 2) Peter Jennings anchors a live report assessing the closing arguments in the O. J. Simpson case, with legal affairs correspondent Cynthia McFadden and Los Angeles correspondent Judy Muller. Among other scheduled topics: What constitutes "reasonable doubt" in jury deliberations? ABC.
* "48 Hours" (10 p.m.-11 p.m., WJZ, Channel 13) The news magazine also goes live to report the latest developments in the O.J. Simpson trial, with anchor Dan Rather. CBS.
* "B.B. King: The Blues Summit" & "Joe Cocker: Have a Little pTC Faith" (9 p.m.-10 p.m. & 10 p.m.-11 p.m., A&E; Network) A soulful double-feature profiles the longtime American blues singer and the British R&B; veteran, with interviews and commentary from friends and associates.
* "Great Palaces of the World" (10 p.m.-10:30 p.m., The Learning Channel) A 12-part series offering vicarious visits to some of the more notable dwellings on the planet, begins with the Hearst Castle in San Simeon, Calif.