A message from a dead acquaintance prompts a bus tour to an unknown crime...In
utter disbelief Miss Marple read the letter addressed to her from the recently
deceased Mr Rafiel -- an acquaintance she had met briefly on her travels.
Recognising in Miss Marple a natural flair for justice, Mr Rafiel had left
instructions for her to investigate a crime after his death. The only problem
was, he had failed to tell her who was involved or where and when the crime had
been committed. It was most intriguing.