The term Greenough Family Massacre refers to the axe murders of Karen MacKenzie (31) and her three children, Daniel (16), Amara (7), and Katrina (5), at their remote rural property in Greenough, Western Australia, on 21 February 1993. They were killed by farm hand William Patrick "Bill" Mitchell, an acquaintance of MacKenzie. The crime has been called "one of the worst crimes in Western Australia" and details of the murders were withheld from the public as they were deemed too gruesome and horrific. The case was so heinous that "cries for the return of the death penalty could be heard echoing around the State".