TONIGHT ON MURDER, SHE WROTE, we're putting on a show! And it's all very Judy Garland-coded.

Mystery novelist and always there at the wrong time Jessica Fletcher (Angela Lansbury) is summoned to Boston by her nephew Grady (Michael Horton), who's part of the team bringing up-and-coming talent Patti Bristol (Lorna Luft), and her mother, legend Rita (Vivian Blaine), in their joint-starring production in rehearsals before it heads to the Great White Way.

When Patti and her brother Barry (Gregg Henry) are caught off guard in a mugging incident that lands Patti in critical condition and the would-be mugger dead, Jessica isn't convinced there's not more to it. But who's behind it?

Could it be the fabulous matriarch never out of makeup? The brother, who was never the talented favorite? Milton Berle; what is he doing here?! Round it out with an opportunistic understudy (Elaine Giftos), a total dick of a director (Robert Morse), a producer (Patrick O'Neal) who really needs a hit, and Grady's girlfriend of the month (Sharee Gregory). It's anyone's guess.

Fortunately, while our cranky idiosyncratic detective (Gregory Sierra) of the week is on an all-veg diet, Jessica is on the case while wolfing down street empanadas. Between scenes of three-card monte and street preachers, we even see two and a half musical numbers! And stick around for a performance from Angela Lansbury in the final act that rivals her manipulative mother role in The Manchurian Candidate; we couldn't be more in love or terrified.

Turn on the coffee pot, grab your old bottle of scotch and barbituates, and please do try to stay on pitch because it's going to be a doozy of a BROADWAY MALADY.