Premise: The Oakland County Child Killer (OCCK) is an unidentified serial killer responsible for the murders of four or more children, two girls and two boys, in Oakland County, Michigan, United States in 1976 and 1977. Several theories and suspects have been named in the case, but despite all these theories, the cases remain unsolved and the killer(s) have never been identified.
Hypothesis: Four or more children were murdered in Michigan in 1976 and 1977.