Murder times three! That's the lineup tonight, a murder mystery every hour including: "Murder, She Wrote," "Murder On the Links" and just plain "Murder One."
* "Murder, She Wrote" (8 p.m.-9 p.m., WJZ, Channel 13) -- Ah, now wouldn't you think Ballynook Castle in colorful Ireland sounds like the perfect place for a vacation? So does Jessica (Angela Lansbury) -- until she's locked in an ancient dungeon and experiences her own ghost story. CBS.
* "Star-Crossed Thursday" (8 p.m.-10 p.m., WBAL, Channel 11) -- It's bad enough you can't tell some of this season's series apart -- now they're mixing them all up! Characters from the network's shows play musical episodes, including: Lea Thompson (of "Caroline in the City") on "Friends" (8 p.m.); David Schwimmer ("Friends") on "The Single Guy" (8:30 p.m.) and both Matthew Perry ("Friends") and Jonathan Silverman ("The Single Guy") on "Caroline in the City" (9:30 p.m.). So who's on "Seinfeld" (9 p.m.)? Alexandra Wentworth, a regular on "The Tonight Show with Jay Leno." NBC.
* "Mystery! Poirot: Murder on the Links" (9 p.m.-11 p.m., MPT, Channels 22, 67) -- In a new two-parter airing in a single night, Agatha Christie's Belgian detective (David Suchet) discovers he must unravel a generational mystery. Two children of feuding neighbors fall in love, renewing old antagonisms. PBS.
* "E.R." (10 p.m.-11 p.m., WBAL, Channel 11) -- Hmmmm. The promos for tonight's episode show Dr. Ross (George Clooney) pretty much melting down, in professional trouble and quarreling with Dr. Greene (Anthony Edwards). Didn't Mandy Patinkin on "Chicago Hope" do the same thing not so long ago? NBC.
* "Murder One" (10 p.m.-11 p.m., WMAR, Channel 2) -- Concerned that Julie (Bobbie Phillips) may be the next victim, Hoffman (Daniel Benzali) tries to arrange protection for the woman whose sister's murder lies at the heart of the series' drama. ABC.
* "Movie Magic" (9 p.m.-9:30 p.m., The Discovery Channel) -- How did they do those special effects in "The Indian and the Cupboard," seamlessly mixing shrunken actors with life-size players? It's all in the digital computer techniques, reveals host Frank Oz.