Plot summary

During the trial of the prime suspect of the murder of Mrs. McGinty, Miss Jane Marple (Dame Margaret Rutherford) is the only member of the jury that believes that the accused is innocent. The judge schedules another trial and Miss Marple invites her friend Jim Stringer (Stringer Davis) to go to the house of the victim to talk with her sister and snoop around. Miss Marple discovers that Mrs. McGinty was an actress and she joins the theatrical company of H. Driffold Cosgood (Ron Moody) to investigate and find the real killer. But soon people around her dies and Inspector Craddock (Charles "Bud" Tingwell) and Mr. Stringer are worried about her safety.—Claudio Carvalho, Rio de Janeiro, Brazil