Celebrated actress Joan Hickson makes her mark once more in this period thriller as Jane Marple, a determined lady with an unassuming air and a flair for solving crime. To know what's going on in Chipping Cleghorn you read the local paper. One Friday, in the marriage column, a murder is announced ... Miss Blacklock buys a special sherry for uninvited guests. The bottle is opened as the clock begins to strike the hour. On the seventh chime the parlour plunges into darkness. Shots and screams are heard. What some regard as a silly English joke turns sour when a masked intruder is found dead. Miss Marple is enlisted to psych the killer out. Dramatised by Alan Plater.