It stars Angela Lansbury, Geraldine Chaplin, Tony Curtis, Edward Fox, Rock Hudson, Kim Novak, and Elizabeth Taylor.

Marina is making a much-heralded comeback after a prolonged illness and retirement (due to a mental health crisis that precipitated when her son was born with severe brain damage).

Excitement runs high in the village as the locals have been invited to a reception held by the film company in a manor house, Gossington Hall, to meet the celebrities.

Not only has Marina been receiving anonymous death threats made up from newspaper clippings, once shooting begins on the film, she discovers that her cup of coffee on the set has also been spiked with arsenic, sending her into fits of terror.

The main suspect, Ella Zielinsky, after going to a pay phone in the village where she telephoned and threatened to expose the murderer, is then killed by a lethal nasal spray substituted for her hay-fever medication.

Miss Marple, now back on her feet, visits Gossington Hall, where Marina and Jason are staying, and views where Heather's death occurred.

By that time, however, another death has occurred at Gossington Hall, which explains who the killer was: Marina Rudd, who has apparently died by suicide.

Jason confesses to Miss Marple that he had put poison in his wife's hot chocolate to save her from being prosecuted, but the drink has not been touched.

In addition, Anthony Steel, Dinah Sheridan, Nigel Stock, Hildegard Neil, John Bennett and Allan Cuthbertson are among the actors who appear in Murder at Midnight, a black-and-white "teaser" movie shown at the beginning of the film.

In 1977, Warner Bros. announced that Helen Hayes would play Miss Marple in adaptations of A Caribbean Mystery and The Mirror Crack'd.

[4] Film rights for Mirror passed to John Brabourne and Richard Goodwin, who had previously produced adaptations of Murder on the Orient Express (1974) and Death on the Nile (1978).

In 1979, they announced they would make the film starring Lansbury, who had played a support role in Death on the Nile and was appearing on stage in Sweeney Todd.

[5] Nat Cohe who had made the decision to finance Orient Express and bought the rights to other Poirot novels felt it was a mistake to make a Miss Marple film.

[6] In August 1979, Brabourne suffered leg injuries in a bomb blast that killed his mother, son, and father-in-law, Lord Mountbatten, but he proceeded with the picture.

I'm trying to get at the woman Agatha Christie created: an Edwardian maiden lady imbued with great humanity and a mind of tremendous breadth.

[11] St Clere Estate, in Heaverham, part of the Sevenoaks town of Kent, was used as the grand home of Marina Rudd (Taylor) and her husband Jason (Hudson).

Ye Olde George Inn and a bridge on Church Street in Shoreham are both noticeable in the production, doubling as part of the village of St Mary Mead.

Some time after the tragedy surrounding the birth, the actress learned from a fan who approached her for an autograph at a tennis party that the woman (who was then a member of the women's branch of the Marine Corps) had sneaked out of quarantine while sick with German measles to meet Tierney at her only Hollywood Canteen appearance.