* "The Simpsons" (8-8:30 p.m., WBFF, Channel 45) -- VCR Alert: It's "Treehouse of Horror IV," a brand-new trilogy of "Simpsons" Halloween stories. Parents should remember to use caution when letting younger children watch these sometimes-shocking cartoons; otherwise, get set for a good time. The scheduled segments this year include takeoffs on "Dracula," "The Devil and Daniel Webster" (in this case, it's "The Devil and Homer Simpson") and "The Twilight Zone." And for those who have missed any of the first three "Treehouse" outings, here's a happy Halloween tip: Fox will repeat the entire quartet Sunday night. Fox.
* "Seinfeld" (9-9:30 p.m., WMAR, Channel 2) -- Marlee Matlin guest-stars as a deaf woman whom the always insensitive George (Jason Alexanders) enlists for lip service -- to help him spy on, and read the lips of, his former girlfriend Gwen (Linda Kash). NBC.
* "Frasier" (9:30-10 p.m., WMAR, Channel 2) -- Postponed from last week, but still worth anticipating and noting: Amanda Donohoe, formerly of "L.A. Law," guest-stars, showing her hand at comedy. NBC.
* "Bakersfield P.D." (9:30-10 p.m., WBFF, Channel 45) -- CBS isn't the only network importing a show from another evening in search of a larger audience sampling tonight. Fox is doing it, too, with this repeat of Tuesday's typically oddball episode of "Bakersfield, P.D." But putting it against NBC's fine and funny "Frasier" doesn't seem either the best show of faith or the strongest possible showcase. Fox.
* "L. A. Law" (10-11 p.m., WMAR, Channel 2) -- Joan Severance continues her guest-starring role this week and is joined by another guest star: Martin Mull, as a travel agent with equally questionable tactics and results. NBC.
* "Picket Fences" (10-11 p.m., WBAL, Channel 11) -- Roy Dotrice guest-stars in this special edition of "Picket Fences," and fans of this show should understand that it is "not" a repeat -- and that tomorrow's regularly scheduled "Picket Fences" episode is another new one. CBS.
* "The Cover Girl Murders" (9-11 p.m., USA) -- Lee Majors looks spiffier than usual in this new USA Network TV movie, but it's supermodel Beverly Johnson who's worth watching. However, this movie isn't.