An announcement in the local paper states the time and place when a murder is to occur
in Miss Blacklock's Victorian house. The victim is not one of the house's several
occupants, but an unexpected and unknown visitor. What follows is a classic Agatha
Christie puzzle of mixed motives, concealed identities, a second death and a determined
inspector grimly following the case's twists and turns. Fortunately, Miss Marple is on
hand to provide the solution – at some risk to herself – in a dramatic final
confrontation.