A man who goes to bed fit and healthy is heard to cry out in his sleep, and the next morning is found dead. The same scene is repeated again and again. The doctors cannot find any physical cause for the mysterious deaths, but people mutter darkly about dæmonic beings and deadly dreams. The 11 victims were all Filipino sailors, and the case was investigated by Dr Gonzalo Aponte of the US Naval Hospital in Guam in 1960. The autopsies turned up nothing, but Dr Aponte found that sudden night deaths were well known in the Filipino community. In fact they have been recorded across the entire Far East.