A study of 104 homicide-followed-by-suicide events in Los Angeles during 1970-1979 are reported and compared, in part, to the findings of D.J. West for Wales and England, 1954-1961. Variables discussed are age, ethnicity, sex distribution of both offenders and victims, relationship between them, methods by which victims were killed, alcohol content in victims and offenders, suicide notes, depression, and physical illness.