A British physician and practicing "bluebeard," Dr. Clements was charged with killing his fourth wife and strongly suspected of slaying her three predecessors, as well. His first two brides were described, respectively, as victims of "sleeping sickness" and "endocarditis," with Clements signing the death certificate in each case. Wife number three seemed perfectly fit when Clements began predicting her imminent death in 1939, but doctor knew best. After she collapsed and died in Southport, a physician friend of Clements persuaded police to order an autopsy -- but the remains had already been cremated, on orders from the grieving husband. Once again, Clements was on hand to sign the certificate of death by natural causes. The merry widower acquired his fourth wife that same year, in London. She lasted until May 27, 1947, but this time there was a discrepancy concerning cause of death. A Lancashire pathologist, Dr. James Houston, accepted Clements's word in listing the cause as myeloid leukemia, but an independent examiner noted signs of morphine poisoning . Police learned, from neighbors, that Dr. Clements seemed to have strange advance knowledge of his wife's "dizzy spells," and further investigation revealed that Clements had prescribed large doses of morphine for a patient who never received the injections A second autopsy revealed traces of morphine, and warrants were issued for Clements' arrest. Calling on Clements and Dr. Houston in turn, detectives found both men dead in an apparent double suicide. Clements had relied on morphine, leaving a note which read: "To whom it may concern ... I can no longer tolerate the diabolical insults to which I have recently been exposed." Dr. Houston, taking his own life with cyanide, left a more plaintive message: "I have for some time been aware that I have been making mistakes. I have not profited from experience." Suicide before arrest.