'It's very easy to kill - so long as no one suspects you.' So says Miss Pinkerton when ex-policeman Luke Fitzwilliam meets her on a train. Luke doesn't take much notice of this little old lady's story about a serial killer on the loose in her village - until her predictions start to come true, when he feels compelled to check it out. Very soon the race is on to prevent any more murders... Dramatised by Joy Wilkinson, and with a distinguished cast including Patrick Baladi, Lydia Leonard, Michael Cochrane and Marcia Warren, this is a gripping BBC Radio dramatisation of one of Agatha Christie's most ingenious detective stories.