Jessica Fletcher (Angela Lansbury) faces a tough case -- a killer new time slot for "Murder She Wrote" -- while NBC tinkers with its Thursday lineup, adding two new single-person-syndrome sitcoms plus season premieres of "Friends," "Seinfeld" and "ER."
* "Murder She Wrote" (8 p.m.-9 p.m., WJZ, Channel 13) Fans of the series beginning its 12th season are crying foul as the network moves the show from Sunday to this perilous time period, premiering tonight against the mega-hit "Friends." But the star has said she expects devotees of the mild-mannered mystery to follow her to the new night. CBS.
* "Friends" (8 p.m.-8:30 p.m., WBAL, Channel 11) Last season's hottest new show returns. Among tonight's plots, Rachel (Jennifer Aniston) suffers heartbreak when Ross (David Schwimmer) comes back from China with a girlfriend. NBC.
* "The Single Guy (8:30 p.m.-9 p.m., WBAL, Channel 11) Jonathan Silverman plays the title role, a would-be author equally concerned about getting published and finding a girl. He's in Manhattan and, yes, that really is Ernest Borgnine, who starred in "McHale's Navy" three decades ago, as the apartment doorman. NBC.
* "The Monroes" (9 p.m.-10 p.m., WMAR, Channel 2) The political melodrama moves into a venue familiar from the world of reality as Kathryn (Susan Sullivan) is subpoenaed to testify before the Department of Justice. John (William Devane) assembles his resources to keep his wife out of jail. ABC.
* "Too Hot to Skate" (9 p.m.-11 p.m., WJZ, Channel 13) Don't worry about the silly title. What else are Oksana Baiul, Nancy Kerrigan, Viktor Petrenko and a bunch of other top skaters going to do but skate? They offer an exhibition from Santa Cruz, Calif. CBS.
* "Seinfeld" (9 p.m.-9:30 p.m., WBAL, Channel 11) Back for a new season, Jerry and George (Jerry Seinfeld and Jason Alexander) vow to be more mature in relationships. NBC.
* "Caroline in the City" (9:30 p.m.-10 p.m., WBAL, Channel 11) Now here's a single girl in the big city. Do you think she'll ever meet "The Single Guy?" Lea Thompson ("Back to the Future") stars as a cartoonist balancing her professional and personal lives. NBC.
* "Lucifer's Child" (9 p.m.-11 p.m., A&E; Network) Julie Harris brings her Broadway portrayal of author Isak Dineson to a lush television treatment of the 1991 play, for which the actress earned a Tony nomination. As Dineson, she relates stories from her life, including the romance with a game hunter dramatized in "Out of Africa."