Before Angela Lansbury, there was Margaret Rutherford.

Rutherford played Miss Marple in a series of Agatha Christie adaptations scored by Ron Goodwin. Goodwin’s music for “Murder, She Said” (1961) will be among the selections on this week’s “Picture Perfect,” an hour of wry mysteries and thrillers featuring the sound of the harpsichord.

In the first of the Marple films, Rutherford’s amateur sleuth goes undercover as a domestic servant. Goodwin’s Miss Marple theme became a popular hit, which you may still recognize.

Bette Davis enjoyed something of a comeback following her turn in “Whatever Happened to Baby Jane?,” opposite Joan Crawford. The film singlehandedly defined a subgenre which has been variously described as “psycho-biddy,” “hag horror,” “hagsploitation,” and “grande dame guignol.” Camp and black comedy are essential elements. “Dead Ringer” (1964) was yet another “bad twin” film, with Davis’ delicious performance underscored by André Previn.

Sir Laurence Olivier and Michael Caine play a deadly game of cat and mouse, as a mystery writer plans to exact revenge on his wife’s lover, in a big screen adaptation of Anthony Shaffer’s play, “Sleuth” (1972). John Addison, who had previously harpsichorded his way to an Academy Award with his score for “Tom Jones,” wrote the impish music.

Finally, Barbara Harris plays a fake psychic and Bruce Dern her cab-driving, private investigator boyfriend, who become embroiled with serial kidnappers, in Alfred Hitchcock’s final film, “Family Plot” (1976). The composer was none other than John Williams, poised between his breakout success, “Jaws,” and “Star Wars,” which was to make him a household name. (Both “Jaws” and “Star Wars” were Academy Award winners for Best Original Score.)

Hitchcock was full of suggestions as to the music and how it should be conducted. The composer recollects that on one occasion, when trying to convey the tone he was looking for, Hitch remarked, “Mr. Williams, murder can be fun.”

We’ll keep our tongues firmly in cheek as the corpses pile up. It’s an hour of arch harpsichords this week, on “Picture Perfect,” music for the movies, this Saturday evening at 6:00 EDT, on WWFM – The Classical Network and wwfm.org.