The Los Angeles Times wrote in 1991: Los Angeles Police Detective John P. St. John, one of the investigators who had been assigned to the case, said he has talked to Knowlton and does not believe there is a connection between the Black Dahlia murder and her father.
Los Angeles Times skrev i 1991: Los Angeles Police Detective John P. St. John, en af de efterforskere, der havde fået tildelt sagen, sagde, at han har talt med Knowlton og mener ikke der er en sammenhæng mellem The Black Dahlia Mordet og hendes far.