Read by John Moffat, this is a dark tale of family intrigue and murder. Available on CD for the first time.
Sir Claud Amory has discovered the formula for a new powerful explosive, which is stolen by one of the large household of relatives and friends.
Locking everyone in the library, Sir Claud switches off the lights to allow the thief to replace the formula on the table, no questions asked.
When the lights come on, however, he is dead, and Hercule Poirot - with assistance from Hastings and Inspector Japp - has to unravel a tangle of family feuds, old flames and suspicious foreigners to find the killer and prevent a global catastrophe.
Agatha Christie was born in Torquay in 1890 and became, quite simply, the best-selling novelist in history. Her first novel, The Mysterious Affair at Styles, written towards the end of the First World War, introduced us to Hercule Poirot, who was to become the most popular detective in crime fiction since Sherlock Holmes. She is known throughout the world as the Queen of Crime. Her books have sold over a billion copies in the English language and another billion in over 100 foreign languages. She is the author of 80 crime novels and short story collections, 19 plays, and six novels under the name of Mary Westmacott.