Mrs. Etherington was acquitted. General opinion, however, was that she was guilty. Her life afterwards very difficult owing to friends, etc., cold-shouldering her. She died as a result of taking an overdose of sleeping draught two years after the trial. Verdict of accidental death returned at inquest.

Case B. Sharples

Elderly spinster. An invalid. Difficult, suffering much pain. She was looked after by her niece, Freda Clay. Miss Sharpies died as a result of an overdose of morphia. Freda Clay admitted an error, saying that her aunt's sufferings were so bad that she could not stand it and gave her more morphia to ease the pain. Opinion of police that act was deliberate, not a mistake, but they considered evidence insufficient on which to prosecute.

Case C. Riggs

Edward Riggs, agricultural labourer. Suspected his wife of infidelity with their lodger, Ben Craig. Craig and Mrs. Riggs found shot. Shots proved to be from Riggs's gun. Riggs gave himself up to the police, said he supposed he must have done it, but couldn't remember. His mind went blank, he said. Riggs sentenced to death, sentence afterwards commuted to penal servitude for life. Case D. Bradley

Derek Bradley. Was carrying on an intrigue with a girl. His wife discovered this; she threatened to kill him. Bradley died of potassium cyanide administered in his beer. Mrs. Bradley arrested and tried for murder. Broke down under crossexamination. Convicted and hanged. Case E. Litchfield

Elderly tyrant, Matthew Litchfield. Four daughters at home, not allowed any pleasures or money to spend. One evening on returning home, he was attacked outside his side door and killed by a blow on the head. Later, after police investigation, his eldest daughter, Margaret, walked into the police station and gave herself up for her father's murder. She did it, she said, in order that her younger sisters might be able to have a life of their own before it was too late. Litchfield left a large fortune. Margaret Litchfield was adjudged insane and committed to Broadmoor, but died shortly afterwards.

I read carefully, but with a growing bewilderment. Finally I put the paper down and looked inquiringly at Poirot.

"Well, mon ami?'

"I remember the Bradley case," I said slowly. "I read about it at the time. She was a very good-looking woman."

Poirot nodded.

"But you must enlighten me. What is all this about?"

"Tell me first what it amounts to in your eyes." I was rather puzzled.

"What you gave me was an account of five different murders. They all occurred in different places and amongst different classes of people. Moreover, there seems no superficial resemblance between them. That is to say, one was a case of jealousy, one was an unhappy wife seeking to get rid of her husband, another had money for a motive, another was, you might say, unselfish in aim since the murderer did not try to escape punishment, and the fifth was frankly brutal, probably committed under the influence of drink."

I paused and said doubtfully: