I wonder who it was that confessed?
From the above mentioned Chronology...
December 17, 1948 Ten-year-old Roberta Rinearson leaves her home in Brookfield, Illinois, to take a bus to attend a movie in nearby LaGrange.
December 18, 1948 The childs body is found in a ditch near Elmhurst. She has been raped and strangled.
December 22, 1948 Herlindo Perez Arias, a thirty-one-year-old mental patient, confesses to Dr. William H. Haines, director of the Behavior Clinic of Cook County, but Haines, in deference to doctor-patient confidentiality, says nothing.
December 30, 1948 Arias commits suicide, but Haines maintains his silence.